I don't think anyone is thinking they wouldn't make new troops for a new sectoral. For anything other than NA2 armies that would be silly. But I would highly doubt they would fill it with all new troops either. But there are a few existing ones that could be in it. Oh I'd ad the Hulang. He seems perfect for that kind of boarding action stuff.
FWIW, even if there’s a naval YJ sectorial at some point, I’d expect to see more Liu Xing instead of Tiger Soldiers. They’re basically dropped from orbit, so I could totally see some profiles that are Forward Deployment or something, rather than full AD, like Crushers for 0-12 are.
All AD: Combat Jump troops can drop from orbit. They come down in drop pods before using their own packs to slow the "last mile" of their descent.
