Completely agree. DK tanks have been the most fun for YEARS because of how they worked, other tanks should be glad that they're getting this type of playstyle, and it works better for monks than the other three because it was designed this way from the ground up. I think monk tanks are awesome.
Yeah. I've been DK tanking throughout Cata and it's so much more interesting than Warrior/Pally/Bear tanking because of the interesting choices (mitigation vs damage vs control) that you have to do with limited buttons. I've tried all the tanking classes and the DK is by far my favorite. I'm leveling a Monk and I'm super interested in seeing how they tank a high level, because it sounds like it's somewhat a reverse DK - instead of spending runes to gain runic, you spend energy to gain chi so it's a bit different in how it handles resource management yet still keeps the active mitigation and the interesting choices there.
I'm just worried about the "too many buttons" syndrome that Warriors have, for example. I like DKs because in every situation, I need the following buttons:
1- Macro for diseases (basically, a /castsequence that resets every minute with a bunch of Icy Touches and Plague Strikes)
2- Death Strike
3- Heart Strike
4- Rune Strike
5- Taunt
6- Death Grip
7- Blood Boil
8- Death and Decay
8 abilities, all mapped to 1-4 and alt 1-4, and I'm done. The priority is simple and lets you focus on mitigation at the appropriate times without being bogged down with the resource system - you basically only use diseases once, then Death Strike + Heart Strike + Rune Strike + Blood Boil super often.