I actually like Armor Abilities. I think they add a new level of strategizing and preparation. In my opinion, if everyone has equal opportunity to the same armor abilities, (meaning, no DLC AA's) then the game is indeed balanced and fair.
I agree that the Boltshot, in its current state, is over-powered for loadouts. If its going to remain a loadout weapon it should either be nerfed to have a longer charge time or do only enough damage to lower the victim's shields.
I haven't really noticed a problem with weapons despawning too quickly, so I'm not sure what problems you're experiencing with this.
I want Halo 5's Team Slayer playlist to be like the following:
-Yes, Loadouts
-No, Plasma Grenades in loadouts
-Yes, AA's
-Yes, Sprint
-Yes, Going Prone/Dolphin Diving
-Yes, UNSC Aircraft
-No, Personal Ordnance
-Yes, Dynamic Map Features
Those are my own opinions, but something I really want Halo 5 to have, is more innovative Armor Abilities. I feel like they're a big part of what Halo is and I want there to be more diversity and uniqueness with each Armor Ability.