New update is pretty spiffy. Main menu is a lot easier to navigate now, it seems that the double-mine obstacle has been taken out, and the new obstacles are a nice refresher. Difficult, but not too difficult. I noticed a couple other subtle changes in obstacles. The shield is a cool addition as well. The distance signs are strange though. It's hard to pay attention to the majority of them because if you look you'll die.
Honestly I think the last major change needed is some differences in the characters.
On a side note, did anyone ever experience a camera glitch? There was one instance while I was playing (previous update) where I was running around a corner and suddenly the camera jerked around Sonic and showed him from the front for about two seconds. Luckily there were no obstacles to screw me over.