Idea: Salvage
I was thinking about Survey ships. They're extremely useful in the early-to-mid game but end up just sitting around uselessly after that.
Then I thought about all that wreckage floating in space in the aftermath of a clash of mighty fleets. Hmm.
Wouldn't it add an interesting tactical element to the game if destroyed fleets left remains that could be salvaged for money and maybe even technology by a survey vessel?