d12 Attack flyers for Spelljammers

I see quite a few engined-/fighter-type things in various Spelljammer homebrew and it leaves me surprised we do not have more 'attack critters' for the same purpose but more aligned to the Age of Sail flavour - packs of trained beasts or flying mounts. The archetype I can think of is the githyanki knight on a Star Lancer from the "Behold... H'Catha!" Spelljammer Academy 5e adventure though there have always been nods towards 'getting monsters on the opposing ship' - with catapults flinging skeleton-balls or bottled green slimes in various Spelljammer 2e adventures. It feels like there should be more 'ship-based monsters' for boarding action support than we see - especially since in 5e killing the crew is a far more direct path to victory than attempting to batter the opposing ship apart. Ship-to-ship encounters could be made more interesting with the addition of such 'attack monsters' - it is the equivalent to changing the terrain to make ship-to-ship action feel fresh again when you…