From: Tehmoosey1 | #012
I have never once heard people complain about a fighting game having too many characters until this game was announced.
In fairness though, it can be a real issue. There is a limit on how many good characters a fighting game developer can create in a certain time, and each additional character makes balancing the game more difficult, and adding too many new characters can result in a game's existing fanbase feeling like they're playing a different game.
None of these are particularly worrying issues for Tekken. The Tekken team isn't going to be creating dozens of new characters, since they'll be refining existing characters. The balance will therefore be relatively unaffected, and the fans won't feel like their favourite has been left out in favour of some weird new characters.
It's different measurements for different game series depending on what point they're at in their history - I'd have complained about 50 characters for Skullgirls, but 8 is fine, and I'd have complained about 8 characters for TTT2, but 50+ is fine.