What I want for CTDS is... The dungeons from the beta, a new 3D graphics (like they did on FFIV Remake), remasterizations (not sure about this term, damn english) of the original musics, but not remakes (The SNES sounds channels are so poor... Mitsuda made a miraculous job!), and Schala as an extra party member will be a dream...
Oh, and maybe this new dungeon could be one in 1999, before you fight Lavos... Full of enemies and Lavos' Spawns with "Lavos attacks modes", and the "first form" of Lavos could be the one that we fight when Crono dies...