Going to necro this thread rather than posting my own.
After a week off work, playing VS a lot and using shift to sprint (toggle sprint option on even), my joints are very upset with me. Shift sprint works great when I'm not binging a game but even with taking breaks and doing stretches my hand is very sore from all the pinky-ing I'm doing.
I'd like to see the original suggestion of the double-tap run or even an auto-run, like a true togglable sprint. You press "sprint" one time and are always sprinting until you press "sprint" again. Traversing blocky terrain and having your "toggled" sprint cut out because you stopped moving, and having to press it again and again is murder on my poor joints. I would like to see this option with "sneak" too, and then especially when I want to use my mouse cursor, rather than holding Alt the whole time. Press it once to engage, press it again to disable, just like your Caps Lock button works.
I've considered other keybinds for sprint but I can't find any that are more comfortable and not already spoken for by other commands... My hand hurts but I must VS.
EDIT: corrected typo