Here are my ideas:
Remove: Shield Bash
Rework: Defensive Posture:
Activating Defensive Posture will also reduce the next Direct damage Melee attack by 60%. If either procs (Direct Damage reduction or Reflected spell), the other is still kept until used. but to reapply the lost bonus, Defensive Posture must be cast again.
Passive: In addition to what is already there, now while slotted also reduces the block cost by 50% if it is a projectile. You can block an additional 10% projectile damage.
Morph 1: Defensive Stance:
Reflecting a Spell Projectile stuns the enemy.
Once a Direct Damage Melee attack is blocked, this ability transforms into Shield Bash for 3 Seconds. Shield bash deals damage and stuns the enemy. Activating Shield Bash with no target immediately recasts Defensive Stance.
Morph 2: Absorbing Aegis
Reflected Projectile now is Absorbed and Restores 10% of your max Magicka (heavily debatable)
When you're hit with a Direct Damage melee attack, you restore 15% of your max health.
Rework Shield Charge:
Now becomes somewhat of a sprint toggle. When pressed, you begin running in a line, consuming stamina as you move. While running you raise your shield, blocking all attacks (and consuming stamina when those attacks are blocked) Running over an enemy will knock them down (similar to the Morihaus set). Running into a Blocking Enemy does nothing and roots you.
Morph 1: Shielding Charge:
Each time you hit an enemy, gain a damage shield.
Morph 2: Power Charge
Enemies are no longer knocked down, but knocked back, and stunned for 2 seconds.
Add - Counter Strike:
This attack is a fast forward jab, that gains increased damage if you've recently blocked an attack.
Morph 1: Revenge Strike
Now adds a Bleed
Morph 2: Counter Swipe
Deals Conal Damage in front of you.
Morph 3: Awp
Instantly kill an enemy from any range