I think more pirate options would be good.
Such as:
-Can choose where pirates will attack and what they will be attacking, e.g labs, vehicle factorys etc
-Can get them to gather you intel as they go along (for an extra fee)
-Option to customise whats going to be in their attack fleet, e.g is it based on destroying planets (increase planet bombers), or blockading enemy off at a neutral well (combination) (since your funding it)
-Not having them attack you if you've paid for them to attack someone else (e.g you can go in with them)
-Seperate private pirate army for as long as you pay them (e.g works like an ally - use them for harrasment or protection - but without the warnings - you can build them up, but if you don't pay they will attack you/be open to negotiations with enemy players)- A good idea for this would be protecting your borders, or trade routes/ships, or for just general numbers.
-Ability to give "normal" pirates and "private" pirates a colour (such as an enemy players colour - which is expensive) and disguise them as enemy ships (also expensive) - so that another player will think they're being attacked by another opponant (aka a proxy war) - you could split the pirates into mutliple, fleets and attack simutanious people - if they are human players they might then be more likley to "cease fore" with you while you sit back and watch them destroy/weaken eachother, thinking they have both attacked eachother and the other has responded in kind with force.
Other non-pirate things:
Speaking of black market things i would also like to see a more developed bounty system, including crystal/metal etc and extra bounty options such as free units thrown in, friendlyness increase, or even a planet or 2 (to give human players more worth while incentives to attack for recieving bounty - at the moment its just credits) - basically if your offering bounty on someone you can customise what you are going to give them.