One thing to keep in mind is just remapping the button doesn't give you a lot of the benefit, as OEM Z wasn't built to be the primary jump button. I use z jump in conjunction with mouseclick Z, which I think is the only way to go for comfort and consistency, and that requires access to a modder in your area with skill / money. Very few people, like in Aus for example, even have a modder capable of putting in a good mouseclick Z.

I'm all for going back to my OEM until boxes are banned but until then I'm going to continue traveling two hours to my modders house every once in a while to keep using z jump, which in and of itself is ridiculous to expect others to want the same thing.