I have a lot of complaints but I would say my three big gripes are:

- Window navigation within (rather than between) open programs. Mainly if one is on an external monitor, this is just a nightmare and I end up using expose and clicking the window instead.

- Window positioning (I installed 3rd party software called Rectangle for this last year so it’s kind of solved but if we’re talking about the vanilla experience this is a big one)

- Having to switch focus to the dock and navigate one by one through shortcuts to open them instead of the Super+Dock position shortcuts that Windows and KDE expose