User blog comment:Zero%/Super Street Fighter IV Characters/@comment-3343682-20111108192418

If Capcom's to be believed, they've already moved on to the next Street Fighter game, so we'd have to wait until then.

The Dolls I'm iffy on, since they're all similar to Cammy in terms of gameplay (at least the playable ones are).

Charlie's supposed to be dead or MIA, so that depends on how Capcom handles his story.

Sean and R. Mika could potentially be interesting. Eagle as well, though they'd have to rework his move set a bit to give him some more options, I'd think.

Dunno about the rest.