The biggest problem in Halo Reach aside from bloom are the AA's. And I mean ALL the AA's except holo have issues that need to bde addressed.
Armor Lock:
-Duration is too long
-Ability to go in and out quickly is terrible.
-Looking 360 Degrees and being able to turn around instantly.
-Frost.
-Blocking Stickies that were on you before you armor locked.
-Shields recharging at end of full armor lock.
Proposed Fixes:
-Increase the time it takes to recharge and remove ability to fight instantly when coming out of armor lock.
-Make stickies kill you if they adhere to you before you armor lock. Make it so shields can't recharge.