Just got this idea from Lord @MaddCow. Forgive this theft of your idea, sir.
Armor Regen is good for players who like to sit and wait in ambush. You gain armor passively so you’re ready for the fight when they find you. And find you they will. However it’s not too good at this. It’s kind of the laughing stock of the perks. So instead we could replace it with a perk that makes you glow less when you have full armor: Because right now, when I wait in a bush I start glowing like a Christmas Tree and I have to fight before I have full armor. With this you’d ideally have more armor.
Just a thought.