I had this posted as a reply in another thread, but thought I should repost it here as its own suggestion.
Heavy Armor changes:
1. Constitution also gains 1/2 Ultimate for every time you're hit, 8/4 second cooldown still applies.
2. Bracing in addition for every piece of Heavy Armor you have equipped reduces damage taken from all sources by 1/2%.
3. Merge Juggernaut + Rapid Mending as a single passive.
4. New passive, Counter Attack when equipped with 5 or more heavy armor for every physical melee attack that hits you reflects a portion of the damage back at the attacker for each piece of heavy armor you have equipped by 1/2%.
Next I like to see a change in the champion points tree, Atronach:
1. Merge Bow Expert with Staff Expert into Ranged Weapon Expert.
2. Add Blocking Expert that increases how much damage can be reduced by Blocking with a weapon or shield.