the tone of people in this thread is despicable at best.
I believe a lot of frost dk's would be angry at the change. blood tanks aswell. It's been so long since blood were a viable dps spec, that i personaly believe it would bring more harm than good. Just look at all the people mad about 2h frost being gutted. what an outburst it would create if they removed frost dps entirely.
i do kind of miss the days dk's could tank and dps in any spec they so chose, depending on preffered playstyle. but it was just too hard to balance.
if they had wanted frost to be the tank spec, they should have done it when they revamped the specs in the first place. looking back, it might have been a better choise, but hindsight isn't all that helpfull. thematicly, i could see reasons for both blood being a dps or a tank spec, and the same for frost. blood being a life-stealing dps, with a mix of physical and magical attacks, a lot like frost is now, and frost focusing on using frost-magic to negate incomming damage, slowing mobs and being good at controlling the fight.
We'd be going back in time then!