I believe the main reason why they named Chrono "Crono" in the SNES/PSX version was because there was only room for five characters... =P
Anyways, I hope they don't make redundant changes, like "G" to "Gil" (this isn't Final Fantasy), but I would like to see Crono changed to "Chrono", and Tonic changed to "Potion", etc.
They will probably use the same font they used for the Final Fantasies for GBA and FF3 DS for the Chrono Trigger DS =D