While I'm here and not playing Resident Evil 0, I guess I'll throw my 2 cents in on at least a few of the DLC choices. I'll just outline what I think we're looking at.
In my previous post, I mentioned that I don't think we'll get more than one character from any one company.
Capcom
From Capcom, we already have Mega Man and two picks from Street Fighter. These are two of Capcom's most celebrated series to date. We also have the Rathalos, the iconic monster from Monster Hunter as a boss.
Despite the amazing result of Monster Hunter World, I agree with friends of mine when they've said that Rathalos is basically the mascot of Monster Hunter, and is their most iconic piece. A Monster Hunter fighter could be cool, but it just seems like...weird. It's nothing substantial, but I just don't expect it to happen.
While Monster Hunter World is the highest selling Capcom game ( I think of all time? It really is great though), their highest grossing franchise is none other than Resident Evil. There's no other franchise or genre in a playable state in Smash already. Do I think there might be minimal comparisons to a Snake moveset for Jill, Leon, or another RE protagonist? Maybe. But there's some interesting stuff for a long-ranged, strategic zoning movesets for these guys. The stage options are fantastic, and even some items (collecting green and red herbs to restore health, anyone?). It's a multimedia franchise that is certainly known to many a gamer.
Aside from Resident Evil, Capcom has other series to go to. Unfortunately, we already know Dante hasn't been picked. Amaterasu from Okami, and Phoenix Wright of the Ace Attorney series are also nice choices. Phoenix Wright especially would be a "less than expected" choice.
Namco/Bandai
By no means do I think a character from NB is guaranteed, but I will at least comment on the fact that Sakurai went out of his way to specifically mention Heihachi and Lloyd Irving specifically in interviews about the content of the game. Both of them have had Mii Fighter costumes. I think it's entirely plausible, if we even get a NB character to begin with, that it's one of these two dudes.
That said, i think we could get neither. Or, simply nothing from Namco at all.
Square Enix
There are some great picks from SE, but I firmly believe Dragon Quest is going to be the pick. It's simply got the legacy for JRPG titles, the longevity, and...I'm sorry, but after that last Direct spending enough time on DQXI, I felt that it was simply happening. They treated the title like it was the next coming of Gaming Jesus. I entirely think we're getting Erdrick/the Luminary.
Other great picks, however, would be Lara Croft, Sora, or another Final Fantasy character. Or Chrono.
SEGA
I'm not sure whether to count Bayonetta and Joker as "SEGA characters" already, but aside from Sonic I simply don't know that I expect anything from SEGA. Sorry, SEGA fans!
Koei Tecmo
I've never played Ninja Gaiden. I've frankly only played Hyrule Warriors and Fire Emblem Warriors. I have no experience with Ryu Hayabusa, but I also have no qualms with him being in Smash. I simply view it as, "Meh, not one I would have picked", but I will be satisfied simply because I can see it as a legacy series that started in the old days of gaming. He's also, like, the original ninja in the first place.
SNK
i watched my friend play King of Fighters one time.
I have little experience with these games, but my questions is more or less, what would Terry Bogard bring that Ryu doesn't already? What fighting style does he bring that makes him stand out from the rest? This is one in particular that I'm simply not convinced of.
I could absolutely see him getting a Mii Fighter costume though.