I hate that, too, but that's why you get a controller like the Razer Raiju which has extra triggers on the bottom you can map things to.
I'm gonna get one of those soon but not so I can map sprint to those, rather I prefer
always having sprint located in the same area: either right-bumper/R1 or right-trigger/R2, with no exceptions. And I want it to stop the function when I let go of the analog stick.
Some games allow for this, where if you stop moving the sprint function automatically turns itself off, but not ALL games do which is why I use ReWasd for this purpose. I can make it so that if I press the right-bumper while the left analog stick is in motion then it will activate the sprint function (usually being left stick click-in or whatever), and as soon as I stop moving with the analog stick then it stops sprinting. I can also make it so that if I long-press the right-bumper then it activates sprint, and make it toggable or hold-able if I want it to.
What I want the extra buttons for is to map the bumpers and/or the d-pad's left and right directions so I can navigate menus or activate d-pad quick-access functions while moving and looking at the same time without any need to take my left thumb off the left analog stick; also being able to free up the left and right bumpers completely so I can use them for whatever I want and just relegating their possible uses to the new buttons would be very nice and allow for some experimentation with control schemes.
The only reason I haven't gotten one of these controllers yet is because I want one that uses the paddles like you see on the Steam controller or the Xbox Elite controller (or the new PS4 controller back-paddles add-on),
not the buttons like pictured here:
Those look very uncomfortable to reach. I want one that has back-paddles, like the Elite or the Steam controller, like this:
Those look much more comfortable to reach, don't they? Anyway, it also has to be
wireless and unfortunately none of these controllers come with everything I want (back-paddles in the right ergonomic orientation and true wireless that isn't bluetooth) in one package... except the Elite controller but that costs $250-300 dollars and there is no way I can justify to myself spending $250-300 dollars on a controller. I mean, I can get a new CPU for that money, or a few new SSDs, or even a decent GPU if I needed a new one. It's a prepostrous price point just to have a wireless controller with back-paddles.
EDIT: I
could just get a PS4 controller w/ the back-paddle add-on and it would work out to around $100 dollars, and the reason I haven't done that is because I don't want to deal with the 3rd-party program you need to run so that Windows recognizes the PS4 controller. Sounds like a hassle.