I think they are relying too much on Marvel vs Capcom to get a Darkstalker following gain, when they really need to just do the obvious and market their major characters to pull in momentum to the original product itself, which is why I mentioned Morrigan. Not only is her image well known, sexy characters sell better and she actually does play a good - well written part of the story. Introducing other characters in the game and having missions would really make people want to play as the other characters they see as well.
But, as far as new characters. At this rate I am not seeing it happen. :[ There are a lot of games that need a follow up, and this is one of them. Even though it is third on my list. ( I really want a sequel to the Rockstar game " Bully " and a remake of Legend of Dragoon. )