Add a -retrain command? (Patreon)

Sometimes when I play test a map, I really wish that I picked different spells for my hero. Or maybe I would like to try a different strategy for the map.

One way to do this is to not use a -load command, lose my items, so that I can use the correct spells. (or you can replay all the maps previously.....)

So should a once-per-map '-retrain' command be allowed for you to re-spec your hero?
Or is picking spells correctly something that insane mode should challenge?