Sakaguchi was just a supervisor...His directorial work gave us Spirits Within!...hooray...? >_> I think we can let him go off with his Blue Dragon & Lost Odyssey...Unnecessary for a new Chrono game.
Aoki, producer (hooray for nothing titles!), brought together the CT team...otherwise...? He recently did battle design for FFIII DS so he's still working for Square.
Uematsu, who ended up doing very little arranging for CT, also still works with Square (he's gonna be working on the XIII with Masashi Hamauzu...The REAL composer for the Chrono series is and always will be Yasunori Mitsuda, who is freelance.
Horii, creator of the DQ series, was another supervisor for CT (how many damn supervisors did it need?)...Well, whatever...he heads Armor Project, which deals EXCLUSIVELY with Square-Enix.
Akira Toriyama, who did an awesome job w/CT's character designs...continues to work w/Square-Enix as the character designer for the Dragon Quest series (as he always has been)...
Masato Kato, the man you didn't mention and that wasn't part of the big hubabaloo known as the "Dream Team" (which was really more of an attention grabbing name w/a lot of attention grabbing names in it when you look at that list carefully), was the main Story Planner behind the series and thus the guy that matters most if we want a true Chrono game. TRUE he's now a freelance scenario writer, having left Square after FFXI came out...BUT he's since worked w/Square in a few Seiken Densetsu/Mana games.
So, the only thing in the way of we the fans and a sequel is getting the people that MATTER...and right now they seem busy or whatever...getting together the right team is essential...
But, I think people were mainly talking about a remake, which wouldn't require as much to be great (as seen in FFIII DS, FFIV DS, & DQIV DS)...and who cares if the remake is on a handheld? Handheld games are great...and besides, if you want it on a bigger screen, emulate, HA!
Us Fans truly have the game at heart!
Have you read the bad fanfics out there? Not all fans know it very good at all. Heck, not even people in the Compendium have it down pat. Kato is the only real god of the Chronoverse. We just live in it. ^_^