I'd like to see an achievement-based armory return. It gives people an incentive to play to earn rewards rather than spend money for the chance to get a reward. I want to feel as if I've earned a cool piece of armour rather than threw enough money at 343 or spent countless hours in Warzone to get that same piece. Leave the micro-transactions for buying weapons and the like in a future Warzone.
This, this man knows what's up. It could work with a new recon like armor that's exclusive by doing these achievements! Think of the opportunities haha, so many will try to achieve it but we all know a few will hold the honor of wearing such a praised set of armor.