As of now, middle clicking a unit causes a box representing the units formation to spin, letting the player rotate them left/right. I simply propose that middle clicking a unit makes them face wherever the player drags the mouse. With this change, for example, if I want to reorient a big lump of units to face outwards in all directions, I click and drag outwards, causing the units to face outwards. With the old system, I have to middle click, figure out which way the units are facing, then drag left/right while making sure I'm not making my units face further in the wrong direction. It's a intuitive and simple change, matching the very elegant left-click drag unit movement system currently in place. It's also faster and doesn't require that the player even look at the unit they are selecting: they grab a unit and tell them to face THIS direction with the flick of their hand, that's it.