*marches for Blue* Huh, what? Oh, this. I suppose I need to make some sort of 'secutive decision, huh? Actually, I think this one is a no-brainer.
Not everything is shown on the map. However, the core framework is, and if some 'square' leads to other 'squares' that other people own/live in/whatever, then of course they'll be rebuilt if someone decides to vacate. Didn't you ever play World of Goo? You can't go removing gooballs from the middle of a lattice and not replace them.
Of course, having someone wipeout would give the owners of the adjacent squares a chance to change how things are if they like as well, and that involves nagging Blue to do stuff, and I like watching that.
Of course, even this is beyond my actual level of care, this is just Admin Dino talking. All I do is teleport from room to room, I never actually walk anywhere.
The ruling is as follows: sure, you can delete whatever you own, but don't be surprised if a marching Blue comes through and paves over it to keep it Efficient(tm) and Whatever(tm). Raptors like that value Order(tm) and Strvctvre(tm).
Hey, I wonder if I delete slippers, they'll be replaced with even bigger, more 'loved' ones...