dunno how long you play,but back in the days 1k DC was you was able to 1 shot everyone,even a wizzard with PDR shield on.
your argument with "adding something game changing for a class (at this post warrior) " its just same with PDR runes,its useless to stack PDR runes as warrior/taoist because you lose to much damage and you dont get tanky enough to have a any advantages with that. Because it is the Shield compared with the PDR runes that make it broken as fk, and ofc wizzards and taos would have a benefit with that super rare helmet,they dont need to be scared to run through FW getting 1.5k hits from it and also dont need to be scared to get get 13 sec blue freez in their face,ofc warrior class got the best advantage through the helmet but they also the only melee class that always need stand next to firewall/frozenground/frostbite and azure tigers, Pet on assist = target warrior that stay in fw/fg.
i dont see anything wrong with Heal pools, G1 got 11k hp and 1.7k MC its insane how long he can stay alive in 10 people of you.
you talking about a unbalanced server,what is unbalanced in your POV?