Probably the biggest one for me is alt-tab switching between windows, without regard for whether its the same app or not. This matters, because keeping track of whether the documentation I'm referring to are currently in a gvim window vs a vim terminal vs a browser, and whether the work I'm currently doing _with_ the documentation is in a gvim window, a terminal, or a browser, is enraging.
The key to bring back the last window I looked at should not change depending on whether the app name happens to be different.
The key to bring back the last window I looked at should not change depending on whether the app name happens to be different.