While they may not go all out and get the members in some basements, I do believe the storefront type of Kingdom Hall hinted at would be easier to sell and re-purpose. They could feel that the spirit moves them to do this for the betterment of the organization.
Awhile back, they bragged about their "level" floor at an assembly hall- I believe it was in Orangeburg, South Carolina. Others had said the place looked like a strip mall. I had thought about assembly halls and large theaters of similar style and I don't recall "level" floors, but pitched floors going down as you went toward the stage so that seats in the back had visibility.
Level floors means they want someone to buy it should they have to bail out. So does a storefront kind of property.
An excellent warehouse or large store: