Hey.
Simple solution and I hope ZOS doing it:
Just increase the light armor passive, which reduces magicka cost for each piece wearing, by 3%/each.
Vice versa for medium armor.
Results:
- pve fixed
- heavy armor ressource nerfed in pvp compare to la and ma, makes la and ma worth it to war again in pvp.
- Tanks will manage through that, same as they did with stam regen nerf in block
Thats it I guess.