All the classic characters are from SF2, so the last spots could be anyone of the classic World Warriors. My guess is Blanka for one spot and Akuma for the other. For characters we haven't see in awhile, notice how it's mainly Alpha characters (FYI, Birdie was in SF1, but many people mistake him from being introduced in SFA, so I'll count him as an Alpha character just to fit the theme). Karin is highly requested, but that doesn't exclude characters like Rose, Dan, Maki, Sakura, or even Sodom. As for the new characters, no telling where Capcom's head is at with the new designs. Necalli didn't really impress me all that much, so it'll be interested to see what the other three bring to the table. I normally main new characters in SF games, so I hope the other three bring something new for me to enjoy.