Well, while this controller doesn’t have Hall-effect sensors (which would be ideal), it does have the sticks as separate, inexpensive, easy to replace modules. They can be popped out and replaced without tools.

I use a Dual Sense Edge controller with steam and it lets me remap the two back buttons, the two front function buttons, and even the microphone button, to anything I want.

Steam already lets you remap those back buttons on other controllers to anything you want through their interface. Isn’t that how you’d do it with a Steam controller?