Yep, this continues to annoy me. The ONE car setting that I truly need to access quickly while I'm driving is the suspension. I'm heading into a new parking lot with an aggressive slope, and I need to raise my suspension. Happens all the time.
I used to leave my "Suspension" page open before I close the settings window so it would be the first to pop up. But now with the new "Quick Settings" page that's always default (and this isn't on there), I now have 3 "clicks" to do in a hurry while driving to change my suspension.
I agree, that this needs to be programmable on the right scroll wheel. Also, there needs to be a quick link for air suspension along the top bar.
If you need a single click to make it high such as for a large water puddle, you need a button to make it low again. So, add a suspension option for the steering scroll and just don't make it geotagged.
Also please see other suggestions regarding using the right scroll button to assist with voice command option selections. I don't find any real use for the right scroll wheel with the currently available functions.
To take it a step further, it would be nice if (at least some) of the steering wheel buttons were programmable. So people that don't need to adjust the height often could program the button to do some other useful thing.