Just ignore them and play EU3, skip mods for your first playthrough. The last expansion, unfortunately, makes the game worse in some respects but it's still a much better game than EU4.
There's going to be literal retards whining about these facts and screaming that you need to install their favorite mod or something, and you should ignore them. Everyone on this board has agreed upon retarded weasle words like "lacking content" or "micromanagement" or whatever is popular to throw at whatever GS game being played today.
And yes, base CK2 is also a good choice, but be aware that the game's RNG mechanics are going to have a bigger effect on your playthrough than most of your choices.