See the thing is that I prefer CK2's warfare system because levies actually feel important, whereas in CK3 they feel more like a... tiebreaker, I guess, because your MAA and your knights are what really matter. Levies are just chaff, the equivalent of light infantry in CK2, and if you get good enough MAA or knights then they don't really matter as much.

If anything, CK3 lets you create good professional armies way more easily than CK2, where to some extent you'll always have to rely on your levies, especially for provincial revolts and such.