@Lannden It might seem like a good idea to add a rating system to dungeons, but I'm not really sure that's the solution. It's a bit tricky, especially in a case where the tank is undergeared.

I usually only pug on my healer, because she's my main and needs the frost badges more than my alts. There was one heroic where our DK tank barely had 20k health and the highest dps was doing barely 2k. It was painful, but I managed to heal it and even had a bit of fun with it. They were genuinely excited for the upgrades they were getting in HoS, and that made me feel good for them. I'd have missed that opportunity if there was a rating system because I'd probably stick to my own gear level and never again see the joy of people gearing up in heroics.

On the other hand, I'm seriously scared to pug with my tank. Because she's third down on my gearing priority list, I haven't gotten her gear up. I also don't get a lot of practice with her, and tanks go rusty faster than any other role. I did one random heroic with her, and wanted to scream at the dps DK that was death gripping things I had aggro on, and dropping D&D on things I hadn't even looked at yet. If I stick to heroics with my guild though, they all outgear me and depending on the player I don't have time to get aggro. (Their fail, not mine. I know. It still chafes.)

Maybe the solution is somewhere between ratings on gear and what there is now. Maybe the only solution is for people to stop using the anonymity of the game to be jerks to random strangers. Or maybe all healers should start calling out the utter fail of the dps who pull aggro. I was healing an undergeared tank friend of mine the other day, and the pug warlock pulled aggro once. Just once. After that he toned down his rotation. THAT is the sign of a good dps, not the jerks who do 7k damage and blame the tank and healer when they die every pull.