Some of the commands I use the most are buried kind of deep. I just got a Stream Deck and am happily assigning key commands like crazy, but sadly, there are a few commands which aren’t available in the key commands section of preferences:
Select to end of system
Select to end of flow
Filter->notes in chords->Top notes or single notes, second note, third note, etc.
OR if there were a hotkey to open the top level EDIT menu, I could assign keystrokes to get to the aforementioned menu items.