My 2 cents on the thing:
I'd definitely love to see another Chrono game. Let's be honest, Trigger has every right to be on all "Top 10 games" lists. The game was simply awesome, with a great story, gameplay, sound and graphics (for that time). Comparing it to some other RPGs, like Final Fantasy series, it had a much more cheerful nature, probably because it didn't take itself too seriously.
And now, we move onto Cross. Cross was a great game on it's own, and I feel it preserved the "Chrono spirit". But the problem was that the developers tried to make a game that doesn't require playing Trigger to know what the heck is going on, and that's what caused the rift between it's haters and lovers.
If there's a next Chrono game, 2 things can happen: It could be a direct sequel to Trigger, or a new shiny game with the "Chrono" attribute where again the only things that links it to Trigger are a few characters and Lavos as the final boss. Now in both ways, someone is gonna get really disappointed. Trigger fans could be getting their Duke Nukem Forever, and other gamers could be getting another generic RPG with nothing new, because let's be honest, it's hard to follow up one of the best games of all time. We all know that Cross had almost half the sales of Trigger.
My conclusion - chances of a new Chrono game are very low, if not zero.