I'm just through the first mission (gamepass), so take this with a grain of salt, but it's...fine.
The setting is interesting, but the gameplay is like 100 other games, and this implementation is barely average in the genre.
The biggest reason I wouldn't buy it now, though, is Paradox itself. If it's like every single other Paradox title, it will be steeply discounted within a year to promote a bunch of DLC that finishes the game. I like plenty of their games, but I'd never buy one this early. Their reputation is too deeply ingrained in the minds of gamers at this point. They just need to go full F2P, since that's how almost all their games end up anyway.