@NickTTG and the Telltale TEAM:
What about a simple GUI (that can be activated in the options menu) with the arrow keys similar to the old Eye of the Beholder games?.
It would only be a small plane sticked to the camera view similar to the inventory GUI with semi-transparent arrows and mimicking the keyboard arrow movement but working like a clickable button for the mouse.
So people instead of pressing the key on the keyboard they just hold the on-screen arrow key with the mouse.
I can illustrate the idea better with a screenshot.
I can go with something like this and i really dont think is hard to do or implement and both sides would be happy.