I really like it.

The peacetime gameplay is much better, there's far more to do and none of it has any made up "mana." You know exactly what is causing what (once you learn it) and aren't just juggling admin, diplo, and military power anymore.

The main complaint is
>it takes ages
Which is true, you will be playing for probably 15-20 hours before you reach the start point of EU4. Every campaign is an actual long campaign now, rather than something you just dive into for fun.

But I really like it. Best Paradox release in a very long time.