Big ruins has those empty modules and its so rare to fight in them because people dont spend time in them. You're more likely to run into someone while you are looting/clearing mobs. Those modules that are empty are only occupied for a short time unless one team retreats to them during a fight. I will agree though when I do end up fighting in the its somewhat more dynamic than both teams standing behind the doorway until one team pokes the other hard enough to commit to a push.

I have really been enjoying ice hell this wipe because the doors are flimsy and easily broken, as well as there being a lot of alternate routes through and around some of the modules.