Guess I should be more specific...
What I'm wanting is a way to rewind/previous, ff/next, play/pause when I'm listening to music without having to look at the screen and hit a single, specific, tiny spot onscreen. Seems like it would be easy to come up with an app or alter the current setup to work in a similar way to the old tactile iPods - press anywhere against the right-hand edge of the screen to skip to the next song, press anywhere against the left-hand edge of the screen to go back to the previous song, press anywhere against the bottom edge of the screen to play/pause.
I mainly listen to my iTouch in the car, and having to look at the screen while I'm driving doesn't seem like the safest thing.