Here's an idea for an Arena setting...
When a plane vehicle dies it stays alive in the game as a burning / smoking crater.
Big fire, big cloud of smoke, oil slick where the boat went down, whatever.
Obviously not something we'd want in the MA (or set the time to dissapear to, say, 5 minutes tops)
I just like the aethetic of fields of burning tanks, plane wrecks, sunken ships cluttering the arena at the end of a scenario...
It'd be extra cool if in a scenario someone had to actually recon the battle field to determine enemy losses.
Just a thought.
~Lemur