Seth Killian and Christian Svensson answered a number of redundant questions from the Unity Boards recently. In Super Street Fighter IV will Vega's claw do chip damage similar to Cody's knife?
In the original game Vega didn't dish out much damage, this could really help him out, considering his overall low damage output.
Seth: Sorry, no block damage on Vega's claw (unless he's rolling at you!).
Since you re-released Marvel vs. Capcom 2, are you going to remake the first game in that series too?
Sven: It's not ruled out but it's not in progress right now either.
Capcom vs. SNK 2 is still popular with a lot of dedicated fans, why haven't you guys re-released it yet?
I know CVS2 still has a dedicated following (and probably nowhere is it stronger than around me, here in Northern California), but this question has been asked and answered many times: no plans right now.
Will we see a D.C. Universe vs. Capcom game in the future?
Sven: You never know what the future holds, but I don't see this happening any time soon.
It's worth pointing out that Capcom has said many of their older games aren't in development for a re-release, but Darkstalkers hasn't been one of those titles mentioned.
While this isn't conclusive by any means, you could argue because of their responses, they may have something up their sleeves for this series.