Hey... I remember something verry funny about Privateer. We can change a faction's attitude towards us by 'befrieding' them. I don't know the true formula of this, but one say either you kill some of the faction's enemy (say... kill some Kilrathi to make friends with Confed) or you can send a commo (number 3 actually) to improve their attitude towards you.
Well.. funniest part: Even the Kilrathi can let us go.
Well... if I fly into a nav point, meet some pirates, the first thing I do is not open fire on them, but... well... tap 'C' then 'Pirate' and '3' (I swear I'll shut my mouth!) over and over again, and they'll stop firing. This is one aspect of the gameplay which is a bit... odd.
How do you repeatively send the same lines and sentences over and over again in real life? (You don't... unless 26th century privateers carry on a recording of 'making friends' on their comm equipment).
Note, that this won't work against Retros (which makes Retros my favorite target practise) and in-script encounters (say... you're suppose to attack pirates at Nav 4... the Nav 4 pirates will never... never be your friend).
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If you want to notice a bit in-game inconsitency...
When you start working with Tayla, she says she'll deal out the pirates for us (read: Pirates won't attack us), but then... only in the Pentonville system... other system's pirates still attack us (unless... like me, you're already in good terms with them).
Also... if you already have a friendly relationship with any faaction, don't take Lynch's fixing offer in Righteous fire... it'll just reset your relations down to Neutral and Hostile with the Kilrathi and Retros (oops.. Retros are never nice with you).
Hope this info is a useful...
-RVN