This doesn't help at all. Players who don't want to certain dungeons don't care about deserter debuffs, they will just leave the dungeon. It happens too frequently and the rest of us get punished for it instead. Please remove the damn thing, I just spent 30 minutes waiting for it to wear off after Voilet Keep and Culling of Stratholme parties both disbanded immediately...
How do the rest of you get punished? Requeue and wait for a replacement. Meanwhile, you can just go do whatever until it pops again.
Because its always the tank or healer who leaves and we have to find a new one. I can almost always fill for one of those two roles but not both. Right now I'm playing a priest and both times the tank left so I couldn't do much about it except watch everyone else leave the party too. It takes too long to find a tank for one specific dungeon when requeing instead of being able to queue up for all RDF heroics.
We shouldn't have to be forced to wait because of the deserter. It's incredibly dumb.