I suspected that this cheat was the reason for the cooldown because it is the first thing I tried to do on my second run :-D if you think about it as being a mechanic then you can balance it an make it somewhat mandatory to use to combat the high difficulty curve ;-)
For time, I keep a log of previous game jams to help me improve, it's not perfect but so far it's helped me keep organized before each jam: https://github.com/foxtrot-roger/game-jam-stuff