Gear vs Habit.
A mistake people make is they buy something new but want to use it like an existing piece.
In this case you are better off just sticking with whatever you were using.
You prevent yourself from seeing any real advantage of the new piece by trying to force or expecting it to work in a lesser capacity.
You can end up spinning the wheels and clicking more buttons because you are doing things in a roundabout way based on what you expect not necessarily the actual path of the function.
Couple of things
The Ren layout and buttons gives it a better workflow.
If you gave up on the 4k because the curve from the 2k, you are again in that same type of position.
The MPC software can a good place to consolidate aspects once you get the proper perspective.
It all comes down to maybe it's not for you.
I would have thought that with all the doors VSTs and the sample parameters opened basslines would be your easiest point?