@ Muukalainen
The problem is to see where is the combat area border, look at the OP; for me the rockets just disappearing is not a problem.
I want to see where is the combat area border whithout the need to move the 3D box curseur all over the screen, it's quite boring.
Just a red line would be enough for me.
Also, you can not see where is the combat area border in the Minimap view.
The Battlescape is a tactic phase of the game, tactic is not the same depending where is located the combat area border.
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Another solution:
Why not put the red line at the combat area border, and you can add thousands of tiles after if you want.