It’s really nice that the Undo menu item says Undo [what] …but if it had more detail it would be even better. Like “Undo change value” isn’t really useful because i have no idea what value was changed if i don’t remember. “Undo change chorus depth” or “Undo change track volume” would be much better.
Related topic: why not keep the modified flag in the undo state? ie. if the module isn’t marked as modified (ie. won’t ask me to save before closing it) then i do 1 change and revert it with undo, the module should no longer be marked as modified.