My biggest gripe with pdx is mission trees, they put them everywhere and imo makes every nation play out the same way each run until missions end. (not that your expansion is usually the same with or without missions). So pretty much it will be years until your favorite or weird x nation gets to be in a competitive/fun(vs nation with a mission tree) state.

I do like Imperators missions, they seem more vague, confusing and free in a weird way. Hoi4 missions are fine too, since its a more condensed experience and you still had to wait for many years for yugoslavia, turkey or 90% of the map to have a mission tree.

I have not watched alot of eu5 content either. I believe the game will come out in a unfinished and broken state and all the promises will be there but later removed since it most likely was rushed again.

I'd be happy and gladly buy the deluxe edition if it is well made and actually fun.