If there is anything I missed from b26 and earlier builds was that units didn't move through each other and that your shots could injure your own troops. Couple that with a freetime mod that made it so you could muck about on any map with just the player brain and you had yourself a cute little sandbox in which to test out weapons, or as I liked to do: use the map like some kinda of make-believe lego war game or something as I play out a scenario in a digital toybox. Would anyone happen to know of any method of re-enabling friendly fire, or perhaps willing to make a mod that does enable it?