I have lost to a melee cleave team. It was a 2 heals team with 2wars and a frost dk. I could not believe the rate at which my health dropped, even with poh spam. The wars would end each game on 400k damage with the dk on 300. Even the rr hungering cold trick wouldn't work due to ams and blade storm. After the third loss trying a few variations in tactics I switched all dks to blood and didn't see them again.

I recently switched out of virulence and desecration into Blade barrier and hand of doom. This was mainly to get the 1min cool down on strangulate and work with some macros so I can cast strangulate on my focus (healer1) every 5 seconds (on 2dks) and at my target (healer2) every 5 seconds also. I have also built in all of my cool downs into my opening hb spam so I have 10seconds of unccable dps on a healer or caster dps with healers effectively cced.