Way too complicated for me. And I hate controls where you have to push a button on the dash, then push another button, then hold a button down, then turn around twice and then dance a Jig, before you get what you want. And when the thing starts to screw up? I can just imagine with the repair costs would be.
I hate Kubotas controls with regards to the HST controls. I liked how the JD 4R series were setup for the same controls, knobs and buttons that were not squirrelly menus. Nonetheless I did buy the grand l and I do worry if it breaks. The electronics in the newer tractors are as bad as modern cars. But, the features do make things nice when operating. I set my response rate and leave it, but if you had 2+ people using the tractor it would be annoying. Plus sometimes it would be nice to adjust when working closer to buildings or in the field.
Overall though I think the HST+ or whatever it is called on other manufactures makes ease of use very nice when using the loader, and somewhat reduces fatigue on your body when having the ability to reduce the responsiveness. The auto throttle advance is one of my favorite features coming from having a geared tractor with the foot throttle.