No support, if you can't pk a pvmer it's a skill issue. Like others have said there's no other activity that prevents you from logging out once receiving anything (larrens chests, drops from npcs, charging glories, etc). This feels out of place, just so you can get a few items off a pvmer, if you wanted to kill someone for chest loot so bad just camp the chest and loot it yourself and kill anyone who gets too close.
Support, 3k raids at 20 mins ea (if you're lucky to do 3k raids all in 20 mins) is 1k hours of just raiding for 3 green logs, most players will rather invest that time in something else. Getting an item to complete a log seems much better for the game, plus seeing the hype in yell over that last item.