While I'm glad this thread has expanded to full enmity discussions, don't forget the OP is talking about lower level dungeons and being sync'd to where you lose a lot of our strong enmity skills. So let's try to offer small tidbits for pre-RoH quality of life.

@Saccharin
-Yes, random groups can suck and at lower levels I don't bother marking targets. Upon loading just explain to the party the basics. "1. Please watch your enmity bars and adjust accordingly unless you want to tank. 2. If you pull threat, come to me so I can pick it up. Running does nothing for anyone but aid in your death. 3. Please focus fire, it is easier for me to tank and we'll clear the dungeon faster."

Provoke(Taunt) also works by putting you above the member who had hate by 1 enmity point. Just 1. So yes, they can pull it back again if you don't do anything right away but it spikes you back up to, if not at, the top.