The biggest issue facing modern games is the barrier caused by animation. Today's games you have trigger an animation that takes much longer than it should. I absolutely hate that. I'm a quick reacting person, I love feedback right away. That's why I love Super Mario World (and why New Super Mario Bros. had MAJOR issues). You get instant reactions. You don't seem to be limited by the game but rather by yourself, and then you can push yourself. It feels like you're in the game, not you're controlling a game. Big difference. Games with tight, instant controls draw me in big time.