I don't like the idea that Super Smash Bros. should be a celebration of gaming in general and this is coming from someone who was one of the biggest Mega Man supporters for SSB 3DS & Wii U.
The thing that makes Super Smash Bros. as a series special is that it brings together various Nintendo franchises together both world famous and the more obscure ones like Game & Watch and Mother. I myself obviously love the concept of third-party characters in Smash, specifically ones that would make a special addition. So far, Snake, Mega Man, Pac-Man, and Sonic have all done this and Ryu could potentially pull it off as well based off of him being a fighting game legend.
But here's the thing; we already have more third-party newcomers this game than we did in Brawl and it's not like we have a shortage of good Nintendo characters either (even if most of them are less well known than the batch we got in previous games). While none of the choices have been bad by any means, I do feel as we need to ask ourselves how far we really want to go when it comes to third-party characters. Like we know that third-parties aren't necessarily restricted to one character, but Street Fighter is still a legendary series that pioneered fighting games. I don't see anyone from Sega or Namco outside of maybe Tekken (and honestly, I am still skeptical about how they'll get Ryu to work) that would be considered a legendary series. As for other companies, Square Enix has Dragon Quest and Final Fantasy and I'm definitely on board with Slime or Slime & Chocobo because of the massive impact on games both franchise has had and I personally like the idea of having either as playable characters. Tecmo Koei has Ryu Hayabusa who I feel would be alright but I feel we can do better. Level 5 has Professor Layton which I feel has potential to be a legendary franchise in the future, but I don't feel it is quite there yet. Then there is Konami and I really do think that if any company should have two characters, it is this one. Snake obviously merits a return. Simon Belmont is okay, but I feel Bomberman would be the better choice because he's more of a Hudson Soft representative than anything and he helped defined multi-player gaming (plus he would be a perfect fit for Smash). Overall I feel as Slime/Slime & Chocobo and Bomberman are the best choices for third-party newcomers with Ryu Hayabusa, Layton, and Simon Belmont being okay but I can't really get behind them either. But as I said, where do we draw the line? When does it get to the point where Super Smash Bros. loses sight of it's main selling point; bringing in Nintendo's best to beat the ever loving crap out of each other? Frankly if we have to resort to characters like Bayonetta, more Sonic characters (and this is coming from someone who likes Tails), and indie characters, I'd rather see Super Smash Bros. die.
As for the question of third-party characters having ties with Nintendo, obviously everyone we have seen has at least some sort of relationship with Nintendo even if Snake is more associated with Sony platforms and Ryu with arcades. Neither are bad choices, but given that Smash Bros. is supposed to be about Nintendo characters coming together to fight each other, I'd rather if our third-party choices be ones that are more closely associated with Nintendo. This was a big reason why I so passionately supported Mega Man and it is also why the third-parties I do want to see are geared towards character that just happened to have strong relationships with Nintendo (Slime and Bomberman).
There are a lot of characters that only get popular because of "leaks." Pac Man, Chorus Men, Ray Man, etc.
Granted I can somewhat understand, but in the end it feels shallow.
When I saw Pac-Man and Chrom brought up, it was mostly in the context of them being likely additions which was partially was I was apprehensive about them being added. Now Pac-Man did turn out a lot better than I thought he would but there are good reasons why Chrom was such a poor choice and when it came to an Awakening character, I'm glad Sakurai put in Robin instead; it at least dispel the notion that Fire Emblem was just lords with swords (even if I am pretty excited about Roy likely returning but then again, I've supported him for years).
"I wear heels and have bigger breasts now, not to mention I'll have sportswear that can be considered too revealing"
