So from what I've gathered, the general consensus is a jail time and PvP being turned back on in The Hub.
As I've stated, my problem is the bluesuits who troll around and need to be kicked/banned/beaten/destroyed for their griefing. The no-PvP is the reason for it as far as I can tell, and a lack of immediate consequence makes it a viable option for the troll to simply make a new character if need be eventually. They simply hope to get lucky and score something big, or get amusement out of harassing players.
Point being, it's not the Thieves' Guild that I see as a problem here, it's the assholes in bluesuits who just spam steal on you all day.