Doesn't that quirk make it difficult for dropships to... drop things? Or for Aerospace fighters to actually have 'Aero' functionality?
I think the fluff in (strat ops, was it?) explained that originally, the "drop" in dropship came from the fact that it was dropped from the JumpShip, rather than having the cargo be mostly stowed on board or in small craft bays.
Fluff-wise, the Nagasawa is a scaled-up Noruff, so it makes sense that this design, like that one, is incapable of entering the atmosphere. Frankly, even for space superiority droppers, I like the flexibility of being able to land for repairs or even to hide out.
What about fighter interdiction? A Nagasawa has less firepower than you'd think, but more than enough for dealing with fighter squadrons, especially heavies which can't out-maneuver it but also can't go toe-to-toe. It has the maneuverability and armor, certainly. The AMS is incredibly useful for screening both itself and others. By the same logic, it doesn't take a lot of damage to kill many transport DropShips. Keep your PWSs and fighters fighting one another, while your Nagasawas have the thrust and survivability to dart in and culling the targets. The battle taxi only drives this home.
Haven't tried one in practice yet, so this is pure theory. I miss the Noruff, so I'm glad something is filling its niche. And while I like subcaps, I'm glad there's something that doesn't carry them.