Shitty automated homing attack aside, I'd love it if Sonic Team tried to build upon the Lost World mechanics while taking a few more cues from the Unleashed style.
I don't think Lost World is perfect, but I do really like how it attempts to blend the Classic and Modern styles of play and actually made the 2D sections feel more like something out of a 2D Sonic game. I could imagine a Generations 2 with the Lost World mechanics alone, possibly even allowing for more zones than what we got in the first Generations since there'd be only one style to account for.
Shitty automated homing attack aside, I'd love it if Sonic Team tried to build upon the Lost World m