Seems Snake has stealthily snuck his sneaking suit self into our thread. It's showtime~
Here's my picture of the categories I'll use for assessing characters again again...
These points are for making a best estimate of their chances, although the weight of each category is still unknown at this time. Other unforeseen factors could keep the character from being added. I'll likely post this at the start of all my assessments.
Snake
Popularity
Snake has always been a hugely popular video game character, but in terms of being a popular choice for DLC, I'd say his support is relatively low. This is for a number of reasons I'll discuss later. Snake is still often top 10 DLC material for Smash 4, but he doesn't seem to have the edge on newcomers that Lucas did and Wolf does among vets. I think a lot of this has little to do with how much people actually like him however and more to do with the fact that many would be supporters simply don't believe he's coming back for a number of reasons. He was arguably the most hype addition to Brawl but now among unincluded vets he's being out requested by "semi-clones" and, in some cases, the mostly another clone of Marth character, Roy. Still, as a vet and a popular and well liked Brawl character, he still manages to beat most newcomers in requests.
Importance
Snake is arguably Konami's mascot and flagship franchise. Although Snake hasn't always been the center piece, most everyone would agree that he's the face of the series. He's become quite iconic due to the successes of his games, standing very nearly as high as the icons repped currently. That's a lot of importance points for a character, but he runs into trouble when you realize how little he's actually appeared on Nintendo consoles in recent years. In terms of Nintendo, he's not the "video game icon" that he is on Playstation. Ever since Metal Gear went 3D it's mostly left Nintendo behind with the exception of a couple ported games and a handheld game or two. Still, this wasn't a hurdle for him to get into Brawl, but now he's also having to deal with relevancy on Nintendo consoles and in general as well.
Uniqueness
Anyone who's played Brawl knows exactly how unique he could be or is. Of all the vets that were cut, minus Ice Climbers, Snake is easily the most unique. One could argue he's even more unique than Ice Climbers simply for the aesthetic and wildly different universe he brings to Smash. And this is just assuming he'd come back as he was in Brawl. He still has a ton of tools he could bring to that game that he didn't in Brawl, if Sakurai and co decided to bring him back but change around his moveset. Yes, this is one place that Snake is for sure the top of the game. Couple that with vet status and there's no question anymore. If this was the only factor, Snake would've been in already.
Relevance
Snake's relevancy is actually on the down turn. It was years ago now that Kojima expressed an interest in "moving on" from Snake's character wanting Metal Gear to move beyond him so Kojima could feel more comfortable giving up the large roll in Metal Gear series development he'd always had. In fact, it's easy to see that Kojima and Snake's fates are intertwined. Where Kojima goes, Snake seems to follow... and where Kojima doesn't go, Snake doesn't either. Kojima is now apparently leaving Konami to who knows where so Snakes fate is very much in limbo. Fact is that Komani has most likely retained Snake's character but it's hard to say what they could do with him without Kojima. The franchise may get a reboot or it may continue down new roads for the franchise. Kojima was extremely instrumental in getting Snake in Brawl in the first place due to his friendly relationship with Sakurai. In fact, he wanted Snake in Melee! Assuming the status of their friendship is the same, many more questions as to the point of adding Snake come up. What's his status anymore in the Metal Gear franchise? What's his status with the Konami shakeup? Does Konami or Kojima ever plan on bringing Snake or Metal Gear in general back on to a Nintendo system? These are important questions because they determine where Snake stands and whether he even makes sense to come back to Smash for any other reason other than "vet".
Representation
Again, like so many third party characters, Snake represents not just a game franchise but a whole company due to how iconic and important he is. Arguably there are less iconic but more "relevant to Nintendo" characters that could fill his spot in terms of Konami representation, but he's the only choice for Metal Gear. The only question is, does vet status still put him at the top? And even after you answer that question, the issues with Konami begs the question if that company should get representation at all? If you say yes to both, you probably support Snake. I'll just say
"maybe". For as much as I love Metal Gear and Snake, I just don't know that I have a good reason why.
Limitations
Snake has a few limitations. He's third party. He's a third party character from a company who's status is in a weird place currently. His relevancy seems to be on a downturn. He hasn't been truly relevant on a Nintendo system in a long long time. He's also a character that arguably could boost the rating of the game, although I think it would only be his reputation that could force that as his appearance alone isn't worth up-rating. Of those limitations, a couple have not mattered in the past: His third party status and his lack of relevancy on Nintendo... although he's far less relevant now than he was even then when he had just two ported games out on Nintendo consoles in the years surrounding Brawl's release in Twin Snakes and MGS3D. The only big eraser to his limitations is his vet status. It proves he can be on the roster and he's at least iconic and unique enough to justify it. It's a matter of how much weight we give his limitations and what exactly the whole Konami/Kojima thing means in all this.
Final Assessment
Chance: 27%
He's just got too many limitations. He's actually got more than Rayman in my opinion, but I boosted his chances over Rayman simply because vet status is very hard to ignore. It does a good deal to erase some of the hit he takes from limitations, due to established uniqueness and having his assets and data just a generation away and seemingly easy enough to port. Still with Konami's status so up in the air it's hard to make a clear judgement, but it's likely safer to assume it wont help. This is a chance percent that could swing wildly depending on what happens next. Even just relevancy on Nintendo systems again would boost Snake's odds up by a good 30%, but it's hard to see that happening. And then there's the fact that he was cut at all. With as iconic as he is, if there was ever a good chance of him returning, you'd think he would've made the cut to begin with.
Want: 77%
Snake was the most hype thing that came out of Brawl for me. When he was revealed, it was unreal. It was the hayday of Metal Gear. Metal Gear Solid: Twin Snakes, Sons of Liberty/Substance, Snake Eater/Subsistence. I got a PS2 only a couple years before I'd gotten a Wii and I was still on the high of these Metal Gear greats. Snake was as relevant as ever and there was no question about his status or his company. Metal Gear even had ports on Nintendo systems recently back then. The hype has waned however. I haven't played a new Metal Gear game since 4 and there's not been a port that I know of since MGS3D which was early in the 3DS's life. And even before Smash 4 was officially announced, me and many other's just had a feeling that Brawl was likely Snake's one and only Smash appearance. I'd accepted that long ago, long before it was confirmed. It's because of this acceptance and the fact that it's hard to argue why he should return other than vet status that my Snake "want vote" isn't 95% like it would be if the atmosphere was still like it was just a couple years after Brawl came out. Still, he's an icon and one of my all time fav video game characters, so he gets a nice chunk of "want" even today.
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Looks like Wolf's next. I was trying avoid him because he just feels too easy to me. His "chance" votes will crush all other characters so far. I'll aim a bit lower than I believe just because I know there will be a few outlier votes giving him as low as 70% chances, heh. I think there will be a few that don't really want him back, but I'm betting on his want votes being high too just because a lot of people will think he ought to be in if Lucas is.
Predictions for Wolf
Chance: 88.8%
Want: 66.6%
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2 Points to Sceptile - (that one's for you Delzethin!)
2 Points to Shovel Knight.
1 Point to Bayonetta?