Salvage seems to be a useless attribute beyond the early part of the game.
Repair of Titan class spaceships seems to literally take hundreds of turns. I have literally captured a ship, parked it in orbit, sued for peace, had the peace expire and had the ship destroyed when they launched the next attack, all before the ship was half repaired.
Is this the result of some game play "balancing" as I remember ships used to self repair reasonably quickly.
I also seem to be outgunned by what should be inferior races.
What would be useful would to be able to send a ship to the shipyard for repair. Somehow it seems stupid that I can build a new Titan class warship in 5 turns, but it literally takes hundreds to effect moderate repairs.