Just popping in as a healer:
I prefer healing tanks with less HP. WARs are annoying to heal, especially if they go full VIT. Yeah it may look cool to have those 25k HP or something, but to me it's the difference between having to throw 2 heals at you or 5, to get you to full HP again.
So many tanks still believe VIT raises their defense, not just HP, so they assume they are super bulky and don't need CDs to survive. No x.x
Please use STR and CDs and healing you will be a lot less stressful to your healers because 1. using CDs properly is all the defense you need (well, and the +def on tank gear) and 2. the opponents die faster so they have to heal you for a shorter time.

What's especially bad is that these turtle-tanks are usually super scared of their HP dropping. So instead of going into Cleric Stance and also dealing DMG, I'm forced to heal this giant unnecessary safety margin again and again when the only redeeming value of VIT tanks would be that I can let them drop to <10% of their HP because that's still more than 2k HP. But nope, they panic and get mad when they drop to 50%, so I spend all the time healing away DMG that doesn't even drop the tank below 14k HP, when I could be dealing DMG instead =.=