I'm honestly not sure where all the vitriol is coming from. Yes, STR tanks will hit a small DPS hit with the transition to full VIT, BUT! You will also have more HP and more survivability, allowing healers more time to DPS before they need to heal you. So assuming everyone is playing properly, the DPS will either remain similar, or depending on how many more spells the healers can sneak in, might even increase.

I get that it takes away some sort of choice from Tanks, but really, this just seems like you guys now get the best of both worlds to me.