The PvP framework in ED is fantastic for a sandbox environment(99% skill, unfair ship balance, engineering providing unknowns to adapt to, Powerplay as a broad evolving conflict engine)... it's just torpedoed by poorly implemented Player to Player interaction mechanics.
Blocking players in a sandbox is dumb; if someone is trolling in an exploitative or abusive manner, ban them
Exploits are never punished: combat logging is never punished, credit exploiters are allowed to keep their exploited gains
Powerplay is available in solo/group: powerplay is essentially pointless as you're able to win without a fight.
Crime doesn't pay: for good or for ill, crime is pointless; there's no real punishment and there's no real payout. Smuggling, piracy and other crimes traditionally exist because the payout outweighs the risk; this is not reflected mechanically. Why are wanton murderers allowed at Black Markets? If you're a known homicidal maniac, your options should dwindle steadily until you're limited to a scant few safe anarchy systems... BUT, you should also be getting serious payout offers for state sponsored 'wet works/spec ops' contracts. If you're a known pirate who doesn't murder wantonly, you should be able to command a high price for undamaged goods.
NPC pirates need to be more prolific: why are weak arsed miners carrying hundreds of millions in LTDs not being clubbed by wings of elite Anacondas covered in shield buster/mass lock torps? Why can these miners not hire a few escorts to share in their profits by protecting them from piracy? This is a most egregious omission; all it would require was 'Purchase Order' missions to be taken before a controlling faction allows you to use a mining hotspot. Are mineral rights, a thing we wage wars over now, no longer a thing? Just tag the ships leaving with unlicensed LTD's as wanted and the cargo as stolen! No purchase order, no access! Why is this relevant? Because it would make PvP piracy waaay more fun and would mean you'd have an incentive to meaningfully interact with other players (I know I would happily cruise a mining area keeping an eye on a mining ship, listening to music, engaging pirates when required, if it meant even a scant 10% of a mining sale... becasue it would feel like I was an actual mercenary/bounty hunter).