Now, in a post on the Sega blog, the company detailed the changes being made for the XBLA version. Even with the visual filters turned off, it's not just the Saturn version emulated. Developer Treasure has changed the AI, rebalanced the versus mode, changed the fonts, and, of course, altered the aspect ratio. In addition, some voice work has been re-recorded.
We don't really have an emoticon for "cautiously optimistic." Whatever it is, that's what we're like.