This feels a lot closer to a cross between EUIV and Vicky 2 than it does CKII. Characters are importanto, but honestly I don't really want them to be that much more fleshed out--I barely look at them as it is.
I'll stand by what I said before in that it does have some blobbing issues--although my current Dacia run has been fairly blob free so far. I feel like diplomacy took a MAJOR step back, the political landscape between nations is excessively barren. I enjoy everything about pops, they can move, die, colonize, and be enslaved--not to mention shift classes. It's interesting, although I would like to see them do a bit MORE than just control taxes, production, and research via numbers. Definitely think warfare is better, keeping generals loyal, clan retinues, and various other improvements make even short wars fun.
I feel like most of what felt off is what other people said in that there's just not a whole lot to do in peace time--it's certainly not Stellaris level boring, but there is a vacuum of mechanics (once I got the hang of it, colonizing the Pannonian Basin and going through the steps to forming Dacia [and eventually becoming a republic] was very easy). TBH though, I feel like Paradox doesn't do internal development well at all--even Vicky 2 was not super satisfying in that regard and its ALL about that. I foresee many changes and additions, but little improvement.
Regarding the overall quality at release, after playing the game without much in the way of expectation (other than woo new PDS game!) I do feel like this has been a good launch. I don't think the small # of buildings is a problem. And moreover if you go in expecting more EUIV than CKII you'll be okay. I can't stress enough that while characters can play an important role, Imperator really, really is not a game about characters. Would I like that to change? Meh, not really. I would like to see more country building, more internal development, much better building tall (city states and small tribes should be able to fuck shit up), and expanded diplomacy first. Striking a balance between interesting characters who can actually affect world politics and stopping every random guy from splitting countries down the middle disastrously will be difficult methinks, if they get there at all.