It'd be nice to have more control over delaying, instead of moving to the end of the round. Sometimes it's useful anyway.
It'd be even cooler to be able to "ready an action" like in D&D -- to use a spell or attack on an enemy as soon as they're in range. I could see that using up some extra AP (maybe 3?) whether your condition is triggered or not, and maybe using up your move for the round even if it's not triggered.