Screw Attack caught up with Seth Killian at Evo 2013 last weekend for a short interview about the upcoming Ultra Street Fighter IV. While Seth no longer works with Capcom, he provided some insight on how much work rebalancing actually takes. So, even though the new characters that were revealed are using assets from Street Fighter x Tekken, Capcom obviously has to spend a ton of effort to get them playable in a classic Street Fighter context.
Seth also reveals his pick (which he makes with no inside knowledge!) for the mystery fifth character. I won’t spoil it, but it’s definitely a character many fans have been asking for.
Source: Screw Attack