@Henrik, I think what ahrayeph wants is to be able to completely clear the mapping of ALL hits for the currently loaded kit. So, not in MIDI in/E-drums section, but in the "MIDI Mapping Key" area to the very right of SD3 GUI.
I agree that this would be useful. It would also be useful if we could directly delete a mapping there, instead of only being able to drag&drop around swapping the mapping keys. Sometehing like Alt+click on a key to remove mapping from the clicked key? Shift/Ctrl+click on keys for a regular contiguous/non-contiguous multiple selection of keys, then Alt+click on deleting all that are selected? Definitely a workflow enhancer!
Some kitpieces have more than 15 aliases on the keyboard, often (I'm looking at you, ride bow hit!). Removing them one by one by first selecting a kitpiece, then expanding the hit type in MIDI Mapping panel, then right-clicking and removing each one is a long and arduous process. It's also RSI inducing, which is not nice! 🙂
