Spooky, last time I had this dio (1/6 of this size), I used 16 lbs. of baking soda. This time, I'm trying a more economically cheaper product: flour. I'll have to wait and see what that much exposed flour will do over time.
I think about the mural all of the time, and I agree. I would have to commission someone though.
A couple things I would like to do is raise the whole thing, and bring the smoke trail speeder closer to the action. I don't like the dio so close to the floor. Different elevations would be nice too, as in at least a ridge for the approaching walkers.
Lights on the downed walker to simulate fire and a trench are next on my agenda.
Thanks so much for the feedback.