An extremely silly question, buut...

[dmm]

And how about: Any ship that runs out of supplies AUTOMATICALLY becomes derelict, and runs a risk each turn of being salvaged by the Trade Federation! You'd have to have ships use a tiny bit of supplies each turn just sitting there in order to get maximum fun out of this rule, but the crippled survivors of big battles would also provide booty for the opportunistic TF scavengers. Engine killing weapons would be powerful once again. This would certainly make those Emergency Supply Pods and Solar Collectors more important! And would make it harder to sit on a warp point in the early game.