I was thinking that some sort of False-creative mode could be useful to make building plans, so we make the building we want using holographic-like blocks which aren't physically present and only visible during that mode and possibly save this plan on a client-side library for later use or even share it. What I like about this is, we actually "build" the desired building but as if it was in the character's mind and later on once we have the resources to actually build...