As per a suggestion, I'd like to see a command for "wait", so that it won't run the next command till the previous finishes. Such as a rotation which can take longer than it does to get the command for an accelerate. Maybe also a way to chain commands in the same line, like "ACC 4 1, WAIT, ROT -45", so it would accelerate, wait till acceleration has stopped, then rotate. I believe you could also have wait seconds so WAIT 1, would wait 1 second.
Also perhaps randomized maps. :P Interesting concept though. One more thought, I'd like the scan line thing as an option to remove. Not the constant background, but the bright one that swipes down from the top of the screen periodically.