Pirate:
you see any vessel around and/or nearby flown by a police man -> rob them and then play mean and kill on sight
you see any vessel around and/or nearby flown by any other faction/rp -> rob them
Police:
you see any vessel around and/or nearby flown by a pirate -> fine them and then play mean/nice cop and kill on sight
you see any vessel around and/or nearby flown by other factions or rp -> fine them for some nice reasons (use your intelligence)
Mercenary:
you see any vessel around and/or nearby -> offer your services so the other can not reject it (use your intelligence to be successfull)
Smuggler:
you see any vessel around and/or nearby -> run like hell, tell the appropriate faction that the opposit is nearby (cop - pirate) and/or inform mercenaries that possible employers are flying around or hire them to protect/escort you
Does anyone see any reason that those things can not be accomplished WITHOUT complains? I don't.
And now, please stop ranting about each others gameplay.