Just a quick suggestion from a long time ARPG player.
In my opinion, for practical purposes, the keybind “Close All / Open Main Menu” should be split into two different binds or, if only one has to be chosen, the Close All bind is, I think, the one important keybind that many people will want to have, since it’s a staple of the genre to be able to quickly get “back into the action” with the press of a button.
It’s also important for it to be separated from any other action (like Open Menu) because it’s a bit inconsistent to have a “clear screen” button that, when pressed again, actually “locks” the player out of the action by opening something else.
Another small thing on the subject: the “Close All” action should also close the overlay map when used.