I've wanted that for so long!
That guy who ran away and mounted at 10% health - no problem.
That guy who farms mining nodes and steals them from you - again no problem.
And the outdoor bosses - i can snipe the healers on my hunter from stealth while they are in full PVE gear
And black market AH will be with no guards away form safe cities! So you can prevent the opposing faction from outbidding you by... killing them