To be honest, the Pirate King would prefer to reorganize the Science corps to handle this kind of thing (the number of incredibly skilled science officers right now is better than ever), but the idea never took off and he personally feels it’s too bothersome to try.
Also, I feel the best we can gain from captured enemies is intelligence, as our technology on weapons and engines is better than most; but capturing an elite ship from time to time doesn’t look that bad. Especially that Unuk with the unspeakable German name they threw at us a couple of weeks ago.