[Marty Ward]

I think if you were a Pirate in a game with all humans just surviving would be a challange and surviving 100-200 turns after being discovered should be a victory!
5% might be enough, just enough to keep you from massing a huge fleet but not so high that you HAD to colonize to keep a small fleet in being. To bad there are no leader units in the game. Pirate captain bonuses would be great!