I covered this in another post....
carrier type vessels can't fly in low orbit. They're too massive and the energy expenditure is simply too massive to maintain it for any extended period of time.
They stay in orbit. They'd prolly even be built in space to save the energy of takeoff, though they would likely be capable of take/landing and even a short flight where they enter into the atmosphere and then exit back out maybe 30 min later.
The water on the other hand is great because you can have GREAT BIG MASSIVE objects and if they're designed right, THEY FLOAT! Then all you need to do is push that massive sucker.
I would love for space carriers to be added but that would require a low orbit system (and then maybe multiple 'worlds' could be connected into a system
) to be added, which very well could also be possible with Forgelight... I don't know but it could make for some awesome potential.
For example, the squad beacon drop pod spawning system is using said orbital platform, in theory, they just aren't physically in the game. Those bases which would cover a region of the world, could be attacked and factions could remove another factions ability to use drop pods in that region for a period of time, which could make the difference by in the ground fight by crippling a tactical option of the enemies.