Awesome! Thank you for the responses.
I had read through the Ratty post and that was where I tried to balance my terrain from. This actually almost takes up 1/3. At 12 inches deep it reaches about 33 inches across the board if tetris'd together. After placing it on the board was when I reconsidered. It just seemed so cluttered still. But I'll make sure to reread that and do some more balancing while I build up my collection of 3d terrain
Ludvig, I hadn't even thought of that until you mentioned it. My roommate and I aren't too worried. But if it becomes a problem maybe we'll make the houses or the steam vents something 'not' blocking.
Adran, yeah I'd really like to start upgrading to 3d terrain. But it'll take a bit of time for me to either start collecting some paper houses or learning how to terrain them myself. We did decide to go with having the crates be Hard Cover/Not Blocking when we set it up since we figured with the houses and the way Dense fog seemed to work there was too much blocking on the field as it was.