Through our complaining and rants, we are still ready to try the next Sonic game, even if it is a bust. If it is one thing Sega can take from all the blunders of their Sonic games, is that they have some of the most loyal fans out there. It’s a great bonus feature for fans to enjoy, and I’d love to see its return. The gardens are only mentioned but never actually seen in later games. Training your Chao from birth and raising it so it becomes a karate master is one of the best things ever, and now it’s gone.
Sonic Adventure and especially Sonic Adventure 2 both featured the Chao Garden as a side activity to the story, and it really took shape in Sonic Adventure 2.