Right now gestures each have a key bound to them. Perhaps have the ability to bind a key to a small-ish pop-up "wheel" (or some other UI cliche) that we can choose gestures from, with small icons representing each gesture.
I don't know if that would be considered too "gamey" for DayZ, but with all of the gestures in the game, trying to find enough keys (and then remember what is assigned to what) is challenging in a not-good way.
The design team probably already has something in mind, but I thought I'd log a request, anyway. :)