Absorb shields for mana (Steadfast Ward, Hardened Ward and other)
Scale from max mana and spell damage.
Mage have nice absorb-shield, nice damage and nice mana-resource.

Absorb shields for stamina (Absorb Magic, Bone Shield)
Scale from % of max health.
A ) Warrior have nice absorb-shield, bad damage and bad stamina-resource.
B ) Warrior have bad absorb-shield, nice damage and nice stamina-resource.

DISBALANCE. Need scale mana-shields from health or scale stam-shields from stamina.

ZOS, and look please this shields-theme.