[Greyjoy]

Pythium I'd say dances on the line. It's not as conspicuously overpowered as Hinnom/Ashdod - Gath is somewhat closer to sanity just because there are so many other LA nations with decent conventionals, thugs, or vampires - but there isn't much in the way of obvious weaknesses and they have a lot of decent strengths. They do fall a little short in magic diversity, but with very strong air and astral and okay water, I'm not sure they need it. Extremely decent infantry, an absolutely insane early game, mages that are purpose-built for communions, some pretty good thugs, and the lower levels of angels are GREAT.

So are the Seraphs, obviously, but in endgame anybody with astral's going to wish them up anyway, so them being Pythium "nationals" doesn't really count in my book.

I hadn't really thought of the emerald dudes as a thug chassis. You're right, they're really pretty good. More importantly, they're incredibly cost-effective. A nice thing to segue to if you get carried away with the early-game hydra rush and someone pulls poison immunes out of their bum.

Pythium's really more on the level of Van, Jotun, and so on. Whether that's "overpowered" or just "top tier" depends on your point of view, I suppose.