With armor abilities, they won't change it too much. The player is already fast enough to maneuver from vehicles, grenades, multiple enemies, etc. with sprint. The jet-packs add the aerial assault to the fold, therefore with that in line, I'm sure they may increase the agility up a little, and bump the player ceiling on the jump height. Not much else is going to be expected; Urk has mentioned before something about the core gameplay remaining in tact.
I love the weapons already, sans the Focus Rifle and Plasma Launcher. They need tweaked more than in a marginal view, for example, the Plasma Launcher's targeting, notably on infantry. It's a point-&-forget weapon. The Pistol is excellent, and once the reticle contains less opacity, it'll be even better. I hope they don't notch it down, because with it being a starting weapon, it doesn't enforce players to scope the map and require the need for power weapons or a DMR/Needler Rifle to gain an advantage.