Couldn't resist poking some PvP'ers in San Tu as I was passing by
I'd make some comment about being rude and wasting those player's limited gametime by interrupting their consensual, planned fights except then I remembered I've ganked hundreds of CMDRs indiscriminately for over four years while blowing off criticism that it was rude to waste those player's limited gametime.
Seriously, though, San Tu is a pretty great option nowadays if you're looking for structured, fairly balanced PVP. They use a matchmaking bot to make sure each fight is randomized so it doesn't devolve into one player group lording it over the others.