They should match up perfectly, every piece of ours is matched to the 1inch grid in all three X, Y, and Z dimensions! That means as you stack our pieces on top of each other, they will always only add 1 inch to the height.
Absolutely! Now that we are fully funded and we can begin molding at the end of our campaign we have plans to start pre-production on a new set of building sets that explores more of the fantasy genre, trap doors, statues, other furniture. We also plan on exploring different genres, such as Pirates/Seacraft, Sci-Fi, Modern, Pulp, Steampunk!