Hi,
a suggestion for a tank balancing.
Right now, the knight/mage holy light domain and Warrior/priest buffs are literally to strong, that tanks don't need any defense CDs in all situations.
I suggest, that you remove the damage reduction debuff on mobs for the holy light domain and make the rest of this skill passive.
Also remove the Warrior/priest damage debuff and make the Warrior/priest a more viable dps.
Why I think this way? Knight/mage is the meta tank atm. No tank is stronger. All other tanks need a warrior/priest to have the same tank ability, but some ppl maybe don't want to play w/p, bcs it is really weak and is in the party only for debuffing mobs and buffing the raid.
Removing dmg debuff from knight/mage and w/p would result in more different tank combinations I think.
Furthermore that tanks have enough aggro if they need to use defense CDs, you can add a little aggro push if needed.
Greetings