You're describing the general reactions to any newcomer. I think we're really overblowing how negatively Dragon Quest is going to be accepted in the west. For one, there's always another newcomer. Two, he could be very fun. You've probably already heard my kind of argument before, but I've heard your kinds of comments before too. All I can say at this point is "Eh." It's not the end of the world. Even if they put someone like Sephiroth or Sora in (who would be my least favorite SE inclusions), it's not like I get nothing from their inclusion over someone else. Some disappointment or confusion isn't gonna kill the series. If we got over the November 1st direct, we can suck this up too.
Nintendo is making a net profit no matter who makes it in. Plus this builds more interest in Dragon Quest as a series over here. It's actually pretty cool. If Smash isn't introducing you to new series, then what is it supposed to be doing?
Well, it has to be fun, but Smash is always doing that.
You’re really in for a loop if that’s what you expect. It’s not like Erdrick has a hatebase like Corrin. Who would be so angry at his inclusion? From what I’ve seen Sora fans made peace with his inclusion, and so have Geno fans (barring maybe one or two). Who would be the driving force of the backlash?
Erdrick may be a total unknown, but Dragon Quest certainly isn’t. You have that Smash Bros. X Dragon Quest at the end and people will understand who they’re playing as.
I don’t see how Erdrick would be a promotional pick regardless, unless there’s a remake of DQI through III that I haven’t heard of.
I don't think we are overblowing it at all. Remember, the effort that has to be put in to get Erdrick specifically is much more than any of the other reps that have been requested for, like Sora or Geno or Crono or Sephiroth. Hell even Slime takes less work because as far as I know, that skips out Bird Studios and Akira Toriyama and makes it a smidge easier, but even if it takes the same amount of work Slime is actually requested by Japanese Smash fans and would be more accepted worldwide than Erdrick. Only those of us who have being in the leak scene really know about how the differences in difficulty between Erdrick and any other more requested rep, but what happens if Erdrick is release and the public gets wind of how difficult it would have been and yet they took priority and handed it to Erdrick instead of characters that we have asked for?
You act like us fans of other characters have accepted this, but we haven't: we still want our favorites in Smash, it's just that our being in this kind of community makes us more in the know of possible outcomes. If Erdrick makes it into the game and fan favorites do not, we will not be happy. We'll accept it, because we have to, but to think we won't have something to say about it to both NoA and NoJ you'd be crazy. Just because we will accept Erdrick if he is revealed doesn't mean we accept defeat in our favorite getting in or that Erdrick is an acceptable stand in their stead.
Now imagine those who don't follow leakers daily, who don't have inside information, who are wondering peacefully unaware of the possible evidence behind certain inclusions. How many of us knew who Erdrick was before we talked about leaks? If we are honest, a lot of us didn't know about him and learned about him via discussion and googling, and people outside of this circle are incredibly less likely to know about him. Then what about the masses of fans who have no clue who Erdrick is? How do you think they will react if Erdrick gets revealed? Do you think they will be happy about it? Do you think they will be upset that 'another anime swordsman' made it into the roster? You think that they won't be disappointed or upset that a character they've never heard of got in over those they've asked for and posted on social media about for years? Then what happens when those of us in the know see their posts and share what we have known, like for example how much extra effort needed to be put in to get Erdrick over any of the others everyone asked for, or how even Japanese Smash fans would rather have Slime over Erdrick and even then they want Sora and Banjo and Geno more...do you think they will remain silent?
Now of course I don't imagine they will cult-up and start rioting in the streets, but they won't just bend over and take it either. People will be anywhere from disappointed to pissed off and no amount of cool moveset can fix that, as Corrin clearly proves. I'm not going to tussle over how well known DQ is here in the West because we all know it's minuscule even if DQXI sold roughly 2 mil over here. Out of all the gamers in the US, only 2 mil vs the insane numbers Smash has sold means that there is more likely Smash fans who don't know about DQ/Erdrick than those who do.
If you look at the past examples and how hyped this game was to be the biggest Smash of all and add up all the facts, it's obvious that Erdrick would only be well-received in Japan and by mostly casuals of the game which is their smallest demographic, whereas Erdrick would be horribly received in the West by the majority of Smash's fanbase which is where they make most of their sales. This is one of the reasons that Sakurai stuck to returning veterans, characters with global iconic appeal, and those who are loved by all instead of by just one nation.
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EDIT: I forgot to address how Erdrick is a promotional/marketing/shill pick.
This is easy: DQ still isn't the success that it is in Japan, and Japanese companies are rather strict on meeting sales expectations. Now clearly there was a surge in the West as DQXI has sold better here in the States than ever (or so I've been told) and if Square wanted to capitalize on this there is no better way to advertise your character on a Nintendo console than to get them into Smash, and as DLC you get some consistent dough on the side no less. This could also be a way to further reunite Nintendo and Square and bring about better business ventures in the future. I've HEARD that Erdrick is actually in DQXI but if he isn't he may be added into DQXI Deluxe and if not there, he can still advertise the next DQ game to the West.
When you take into account the obvious business advantages and combine them with the fact that Erdrick is one of the least requested characters for Smash, and you have a formula for 'Erdrick is a shill pick, **** Nintendo if he gets in' on your hands.