*Nitpicking time!*
So... how exactly is this Usonian cruiser supposed to be defeated by the rest the other factions?
Like, 50-60% of the airship's silhouette isn't even the superstructure or anything dense and sturdy that an explosive shell would detonate upon hitting. 50-60% of the airship is hollow gas bag. An explosive shell from a tank or a mecha or an artillery piece would just punch straight through the gas bag and exit the other side. And zeppelin gas bags were subdivided internally into smaller bags so a hole actually wouldn't really mean anything. It'd take tens of thousands of machine gun rounds to tear up the airbags enough to cause significant loss in lift. I guess maybe everyone carries around shotgun/pellet ammo? Except apparently airships hadn't really been deployed in the war up until this point, least of all no one in this theater, so why pack shotgun/pellet/flak rounds that you don't expect to use?
Furthermore, these airships would be operating at least several hundred feet in the air so it's going to be really hard to hit any vital structures on the airship with the correct ammunition (gas bag for shotgun/pellets, bridge/engine super structure for explosive rounds).
Also... this cruiser has gun turrets ontop, presumably to shoot at other cruiser sized airships and above. But... again, it seems like there aren't really any other cruiser sized airships that have been operating in this theater until the Usonians arrived. So what are those gun turrets for? Bombarding terrain and bunkers? But can't you just drop bombs on those?
Also, this cruiser seems rather top heavy. Maybe they have a lot of lead or some other super heavy metal weighing down the ship on the bottom, keeping the center of gravity low... or maybe this airship has some magic stabilizers or something. Seems like if it got hit by an explosive round on the top structure, or there was a mighty gust of wind, or if it simply rolled too much, it'd flip over. I mean, why have your bridge and your deck ontop? Why not sling them under the bottom? In the bridge ontop, a commander can't see the terrain below. Were the airship designers afraid of the bridge crew being shredded by shotgun/pellet/flak cannon fire from below? I'd think that the bridge compartment could be reinforced enough.
*end pointless nitpicking*
(Yes, airships are dumb fantasy stuff. We let it slide because it's cool! But if you're going for something realistic, than at least put your bridge at the front of the airship or underneath it so your officers can actually see below! And either have the center of gravity low so that the airship can't flip over, or use magitek stabilizers or something!)
Would also be cool if there was a biplane carrier airship that used a trapeze system for catching and launching biplanes. Or I guess it could do the Crimson Skies thing where there is runway deck, like on a naval carrier.