Okay, any of these would be awesome. I don't expect some of these, and all of them are very unrealistic. However, probability dictates that the more wishes I have, the more likely it is that some of them will come true!
New attacks (Like more lasers for Robo)
Double Techs for Magus (even if it's just with Crono)
New Character *
New Game Plus advancement**
New items, especially for Magus
Correction of a few translation errors, most importantly the whole "Step-brother" thing.
A completed map of Apocalypse. That way, maybe the dungeon could be in 1999!
A remastering of music, but the ability to switch between the old style and the new. While I would like some music to be more clear, all of the music are absolutely PERFECT! There is no soundtrack in any game that matches Chrono Trigger. If they botch it up in the remastering, however, I'd like the ability to play the old version.
A retcon about the deaths of the main characters in Radical Dreamers/Chrono Cross. Don't get me wrong, I love Crono Cross, but Lucca, Robo and Crono are some of the best characters in video game history! I don't want to have the heroes that saved the world to die anti-climatically after so much hard work. (Of course, this is assuming that Crono died in the Guardia overthrow, that Lucca was killed by the much less powerful Lynx and that the Prometheus circuit is Robo, and also that Robo wasn't time-cloned when he was sent back into the future)
*Possibly Schala, although isn't she supposed to be less powerful than Magus? Other good includable characters could be Johnny (lol), a reptite or a Nu.
**Let me explain. I would like a Chrono Cross-like ability to switch in characters I don't have yet. This would have no effect on the story, but I'd be able to use Magus on earlier bosses without cheats. Including Magus. Awesome.