Also, is the slide move really suppose to go that far? It seems ridiculous to slide half way across the screen so fast when the character walks so slow. I'd say tone it down a lot and maybe give a powerup that lets you go farther.
Yes- while the slide is on by default in the demo, it's not part of the normal game. It's intended for a game mode that gives you the "Ninja-Esque Bandanna", which gives you sliding, backflips, etc. There are various gameplay modifiers that change how Simon attacks, moves, jumps, etc and provide a more tongue and cheek experience.