...it would be a smash hit. There's still plenty of people who know what Chrono Trigger is, and I feel like even casual fans would watch that. Especially coupled with how succesful the Castlevania anime is, and also the wave that the Dragon Ball franchise is currently riding. I feel like even Dragon Ball fans who haven't played Trigger would watch this because it looks like Dragon Ball.
I don't think it'll ever happen, but I think it would be very succesful if it did. A long time has passed, but so what? After Dragon Ball GT, nobody ever thought a new Dragon Ball anime would ever happen, even though fans hoped and hoped for years. It's never too late.
One can dream, I guess.