About crash on Linux, no, after deleting all game related files, and re-DL fresh, i don't need to do anything, it's working fine.
I know the tiles on the pictures are floor, but it's not obvious enough, i think.
The Action Points, yeah, i suppose it's late for a deep change, but still, it was my main concern since the first day i read about the game.
I forgot also on feedback, i said it already for previous versions : Double-click on Overwatch, Defer turn, Defend... would be great, instead of having to Click once, then move the mouse, then click a second time to confirm