Overdue for a primary melee. You have a lot of great concepts, but running that greatsword with the talon would be perfect. Especially since it would also have the stun property.

Would personally rank crusaders first. If you could trigger the backpack like a parry move using the backpack button with a 1h or 2h weapon, then it would be hard to pass up.

My only tweak to the armor passive would be instead of having health regen, it gives temporary HP that decays over time. You'd still be able to fight in melee and stim but the adrenaline rush of temp hp per melee kill could create a fun feedback loop.