That's pretty cool that you can switch between remastered and classic tracks. I liked most of the remastered ones, though there were a few that I thought got ruined. *Shakes fist at the people who remastered Challenge*
You'd think so, and hopefully both come to the X1 too. It would make sense, given KH3 is coming to it (assuming SE aren't tied to any kind of exclusivity deal dating back to the originals, which i'd guess is the case with FF10).
Would be great if they could couple 1.5 and 2.5 together though.