Yeah, but you can already do that in DayZ. What's the point of porting DayZ to Blockland if you won't use the one thing Blockland offers? (Building)
Building could be introduced, in the ways you seem to be saying. But first of all, it'd be a bit odd to see people building little homes in a zombie charred wasteland. The other thing would be that some builds would be god awful, and the idea of getting the supplies would be strange too.
We'll leave it to a limited sort of building, just so things don't get out of hand or anything.