Sonic's too weak
In my opinion, Sonic's way too weak comparatively to other caracters. When I play in coop with friends, I get stuck in every obstacle and gap, while they take shortcuts, screw everything and go above dangers with Knux and Tails. It is noticeable especially in the end of Canion Zone 1.
I'm not that bad player. To be honest, I'm the best of us, but I still get to exit last. Also, the original levels aren't bad, the difficulty for Sonic starts, when we play some imported stages.
I'd be happy if some things from below were added.
-Reduce Tails' flying time or max horizontal speed.
-Add Sonic ability to wallrun. No, only vertically.
OR
-Add Sonic ability to walljump.
-Slightly increase Sonic's acceleration
-Add Sonic anything, that could increase his vertical movement.
And yes, I am aware, that Sonic's the fastest character, especially with his thok. Yes, I am aware, that only Sonic can transform.