I haven't used #ableton Live heavily since maybe version 10, when did it get an undo history? This is great!

Looks like it was in 12.1. I haven’t kept up.

My personal-itch feature would be a hand-editor for the MIDI mapping table since it’s currently kinda fussy to map controllers that send multiple CCs at once (e.g. x/y pads), but undoing back to the one I want still works. And the new history definitely makes that easier.