1. Rep rules can be enforced... Server rules 2.4, even though it's only for Faction affiliated characters, if u see a pirate faction character not getting chased around by the local police or BH, take a screenshot and post a complaint... (Keep in mind some pirate factions are not hostile to all houses)
2. To deal with the attacking of traders, make it manditory to give a warning demand, but do not delay in attacking. My idea, you've got from the time I start shooting at you until I kill you to drop the cargo that was requested which should be more than enough time to jettison. Piracy should work the same way for players as NPCs, don't demand cash, demand the cargo.
3. Don't complain about how unfair a pirate BS is compared to a lawful fighter, for the most part it's usually the pirates running into house capships and being called a coward when they run, either to save themselves from the capship or the swarm or navy/police NPCs who have the capacity to pilot MK2 versions of house fighters. (even pirate NPCs don't have these upgraded MK2 versions of thier ships, correct me if my statement is wrong)
4. No one needs warn you so long as they don't drag your shields down past the 1/2 way mark, where it is still considered "shooting for fun" as opposed to starting PvP.
[AW]AWC-Toronto <- Big Bad RH cruiser
[AW]282ndSKings.Redout <-Talon
Transport IMS-Canuk <- "Target" Shipper