The game is highly vehicular.
Vehicular combat, then? Maybe.
I expect LGV-like bikes (hover, booster-assisted...etc.). Quads, even. Like the ones in Defiance. Tie some vehicle mastery points to them. Progress through levels of it to get better handling, boost, HP, speed, customization, colors, decals...etc.
While I don't like larger vehicles, the rover-types from Firefall, able to carry a squad, would be welcome.
Also, should make all vehicle be able to carry at least one passenger, so players who do not yet have access to vehicles, or have slower vehicles, may get help and fairs from others. And depending on the size and seating, the passenger can fire either their own weapon or a vehicle mounted weapon (and those could be customizable, as well, swapping different ones in and out for versatility).
Larger aerial vehicles should only be available as troop/platoon transports while transiting from one outpost to the next, as in Firefall, where the dropships in Coral Forest go around like buses. And to make it interesting, these shouldn't be impervious to attacks. Depending on the route they take, they'd need to be defended, occasionally. It would add some extra excitement, apart from looking at the view, to transiting between places.
If Ember will have something similar to arc-folding technology, they could go TERA's way and introduce a few teleporting locations, in major outposts, between which instantaneous travel/fast-travel would be possible for a small fee in basic resources. These could be the transiting location between zones, too.
AND of course it would be amazing if gliding returned in Ember, as well. Jet-packs, too.