It really has nothing to do with the UI and there is really nothing that needs to be fixed.
Actually, it has *everything* to do with the UI. There is a lot to love about this game, but to make such a claim is just silly. Despite all the good parts of the game, there are indeed, many aspects of the UI that are simply put, pants-on-head retarded. This is one of them.
This is akin to having a prompt before overwriting a save file, or formatting your C: drive, or having a safety belt light come on in your car's dashboard. The game will automatically displace your HQ unless you go through contortions to prevent it. I want to focus on fighting my PBEM opponent, not on fighting the interface. In other words, playing "Simon says" with the interface bouncing my HQ back, because I didn't move in the "proper" order is NOT what I want to do in a game.
Your idea of fun may vary.