More airtroops: Yes Dragon: Nope, nope nope no Clash copy Air defenses: Yes if we get more airtroops. But they should not fire at skyraiders
No to air troops no to air defense. Sky raiders already stretch the possibility of the theme . We don't need anything else
How about a Falling Brute/Juggernaut. A Special Type of Brute/Juggernaut that falls and deals a whole lot of damage to the surroundings. And a Suicidal Bomber, that falls to his death and explodes (May replace falling brute/juggernaut idea). Or air bomber..........nvm not a clash copy. And a giant parrot? That carrys troops to a certain location and also a small parrot that pecks buildings, similar to the bucaneer, but the best thing is that it isn't able to be targeted by mortars! You say air pirates, a dragon isn't a pirate.
The only other air troop I could possibly believe for the genre would be "Canon fodder powder monkey" unit. Shot in an arc from your ship and exploding upon impact.