The main character's name is SONIC – it's a reference to how fast he can run. Why must the game include all this other random crap, especially when it isn't all that polished anyhow? GamesRadar understands that Sonic runs through levels so quickly that a game without excess junk would be shorter. But they would happily play, replay, and replay over again a game that lasted only a few hours if it reminded them why they fell in love with this character in the first place.
Here's a hint: It wasn't his stretchy arms.