I've had a few ideas for new Armor Abilities, as well as some possible changes to existing ones.
The first one I thought of was an EMP. Fires off an EMP which has a similar but greater effect than an overcharged Plasma Pistol shot. It has a radius slightly larger than Regen Field, and a recharge time similar to Regen Field. If an enemy Spartan is inside the blast radius, their shields are lost and recharge normally after the normal delay. Their armor ability's charge will also be lost, and recharges normally. Vehicles have a standard EMP effect that lasts about 15 seconds. The EMP takes a second to deploy and a second to recover from, during which time an animation something like Drop Shield's deployment is taking place, except the Spartan is punching the ground, not merely throwing something onto it, which means no moving or shooting. Allies and the user are unaffected.
Next is Hardlight Barricade. It deploys a single piece of cover which is slightly longer than the Cover, Crenellation Forge piece, but capable of being crouched behind for the enitre length. If you stand up, you can shoot back, but can be shot. You can't shoot through the barricade, or be shot through it. Vehicles cannot pass through it. Deployment time, recharge time and duration deployed are the same as Autosentry.
Then I thought of Kinetic Pulse. Which I kinda got from the Drop Surge article. (http://www.343industries.org/forum/topic/27216-ideaarmor-ability-drop-surge/) (OK, I got pretty much the entire idea from it. Please don't hate me) There's just a few details about it that shouldn't be speculated. Recharge time, deployment time, deployment animation and radius are that of the EMP, and it affects everything that can be moved. Meaning not structure pieces or objects with fixed/phased physics, but anything else like enemies, vehicles, and even allies are affected. Obviously the smaller the object the greater the effect, and the further from the source the lesser the effect. But I figured it'd be fun to just throw some crates at your enemies.
FInally, Flarelight. (Please, someone, think of a better name for it!) Basically, it produces a quick, blinding light, with an animation that is pretty much exactly like Drop Shield, but the little blue ball is white, and very bright. If you're looking at it when it deploys, you're blind for about 6-7 seconds. Recharge time is about the same as Promethean Vision.
Just one last thing for possible modification: Thruster Pack. I'd prefer to move a little further with it if possible
Well, that's everything. Feel free to add new ideas, comment on existing ones, and moan at me because I did something wrong. (Not too much of the last one plz)