I hate to hold my mouse button to aim down sight or hold shift key to sprint. Why can't I just simply tap shift key to sprint then tap it again to walk?
Sliding and aiming should be easier.

Ps. Just for suggestion.

Yeh, I find this annoying for aiming, as I'm so used to just tapping right click to aim :/
There might be an option to toggle in the controls, but I'm not sure where...