I really dislike Tails' gameplay—well actually, no I don't; it just doesn't belong in this game, especially when I turn the game on and expect to have something closer to the original Sonic Adventure. But I guess I could just go Action Replay this thing to death, ignoring that it obviously doesn't fix the game. =S
Other than that though, if I were to just ignore the other characters (which is a little difficult to do, especially with Shadow and his limited level selection), I'd say this game is rather good. I also look forward to this release, although if it's not ported over to the PC, I probably won't get it, considering I have no reasonably sized storage medium for my 360... But hey, on the bright side, SA2B isn't hard to emulate. And once the Dolphin devs get GBA emulator linking working (with SA2B and VBA-M in particular), there's no reason to play anything else! =D
And on the note of hacking: It's really not particularly hard or anything to hack SA2B already. I mean, at least you can repack the disc image and have it actually boot up, unlike normal 'ol SA2 for the Dreamcast. I could never get that stupid thing to selfboot again after modifying it (and I wasn't just doing it wrong or anything, as I've gotten it to work with Sonic Adventure; Sonic Adventure fixed edition lol~). I've already removed Sonic's mustache that nobody notices.
Anyway, I went off on a bit of a tangent. I think it's more than likely going to be—if this does exist—a port of 'Battle; and seeing as SADX got a(nother) PC port, it's somewhat likely that this will too, and I really hope it does... as long as they don't pull the same thing they did in 'DX.
The original release was easier to deal with from the hacking side of things for its resolution. The 2010 version... not so much. I'm sure somebody will figure it out eventually, but I don't think we should settle for that.
Edit again: Oh derp, just got what you meant. I guess my point still stands in general, though.