Love the required tagging idea; that makes rotes more potentially powerful, yet relates them to the situation. In a way, this plays into why/how they got to be rotes: if PC X is "often in such and so situation" then it's not only muscle memory it's "psyched for the situation" sort of memory.
I almost think that Harry has a sort of rote (or maybe a self compel) to keep himself consious and fighting when damaged, since he's been in that situation .... often.