This is a brain dump of a few things that annoyed me in short succession while I was editing shortcuts in Affinity Photo on macOS. None of these are a big issue in their own, but in combination they led to a bad experience for me:
It all started with the strange shortcut for Edit > Fill…; Shift-F5 is a really strange shortcut on macOS (Command not used as modifier, F-keys are mostly overloaded on macOS). (this is the only item that's specific to Photo).
No search for shortcuts in the preferences pane.
Window cannot be made taller, even though the list of shortcuts is really long.
Assigning a shortcut leads to warning triangle with tooltip "Repeat" without any indication of what other command has the same shortcut.
That's it. Thanks for your consideration!