Won't really know until the game comes out really. The key, and I really do mean to stress this, the key to having a successful scene (not just offline) is to make sure players come offline to support their game and their other players.
Seriously, it is the one metric that is used to judge a game's life. If players keep the game in the spotlight, show that they are willing to support their game regardless of what others think, and help teach new players the skillset required to play the game, the game will succeed. If the game succeeds then Koei-Tecmo can put more money behind the game, the series, and the fan community. It's literally up to everyone to show their support as they can. The chances of us getting into this first year of Evo are incredibly slim due to the community's past, the game's past, and the fact we only have 3 months maximum to show that people will pay to fly out to Vegas and rep their game and community. That's not a lot of time to show that things have changed.
Seriously, regardless of the final mechanics, if you enjoy playing Dead or Alive 5 and want to see a Dead or Alive 6, show up to offline events, form a local community, and prove by numbers that this game means something.
[/soapbox]