It sounds like the start of a bad joke. It is instead the composition of a group I ran with in a hellfire ramparts run (and a fairly common composition I'm sure). I thought I would share a few interesting notes from the run and behaviors I noticed.
First of all, despite what blizzard says, death knights are not ideal tanks. Their attacks by their nature generate aggro, and their frosta aura I believe has some built in mitigation and threat increasing components but even in a full frost build (which I admittedly am not), they are clearly a 4th option and may even be worse than an off-spec version of a "true" tanking class. Death and decay works much like consecration, but it's extremely high cost in runes (1 of each) makes it less than ideal for tanking. I ended up "tanking" our run by virtue of being in frost aura and using the same pattern I use for AOE griding. I generated the most threat so mobs attacked me and since I was taking the bulk of the damage, the healer healed me. This was COMPLETELY unintentional.
Death knights are admittedly over powered. Our group was 2 level 62's, a couple 59's and our healer was a level 65 resto shaman (who was amazing, I wish I could remember his name). We had no wipes even on an over-pull (which I will discuss in a bit). This being over-powered is great for solo grinding or a DPS capacity, but the mindset will be a drawback in a difficult instance. The group leader refused to mark, random people were pulling, there was no discipline at all. We didn't wipe, not because of anyone's skills (one guy wanted to AFK in the middle of the instance to "hit his bong") but because. It looks like we can safely name DK's "Children of Huntards" because they take even less skill to play and it seems like most people playing DK's now not only have no idea how to play the DK, but don't know the game in general.
I never want to run a multiple deathknight instance (unless it's all guild) again. There are multiple reasons for this. A) we all use the same gear, so everyone is basically rolling on the same thing so the only thing I have a good chance of getting is XP, no thanks, I can quest for that. B) No CC, no discipline, and most people who play them I think just hit random buttons, yeah ramps is about as easy as it gets, I see multiple wipes and frustration if too many were included. C) last, but not least, it seems like the only people who play them are annoying and/or don't know the game. Maybe its the level, maybe it's the fact I very rarely PuG anymore, but I see tons of them running around, chatting in general chat with no idea whats going on. You know whats worse than a n00b? An OP n00b.
I love my death knight. I will continue playing him. I will probably level him to 80 and keep him around in case my guild happens to want melee DPS and my tanking and/or healing services aren't wanted. I LOVE questing and solo grinding with him. However, thats what they're best for, questing/grinding and not instances.
Mid Afternoon Quickie
6 months ago