Very interesting topic.  One I thank SHM for bringing  up.  His idea is simple and not game breaking by any means.  
I am not sure about added extra skirmish points as a reward when we already have a tech that can be researched for that.  That part seems like double dipping.   
Zero turns for skirmish is also a bit much.  Turns are a commodity in this game.  Maybe make it 1 turn. 
I do agree there needs to be some extra perks introduced for pirates and pirate held ports.  There are several forum topics regarding this subject.  
I will also say I agree with 99% of what Vane has said.  His arguments are just.  I am not a pirate but know what it takes to be one.  It is tough, way tougher then any other play style in the game.  ''Tis why I am a hybrid player.  
My honest feeling on this subject is Flagship and some tweaks to a pirate held port would be enough incentive for a pirate in my mind that all other ideas could be tossed out.
			
 chal for catching that.