I suppose this could prevent anyone from 'stealing' builds and using them as their own (not that I've seen this yet).
Offtopic: You know, the fact that you registered today might be the reason why you never saw anyone steal builds. What's you bl_id?
Ontopic: Good idea, but would has downsides, e.g. host not on his dedicated and it crashed, and nobody was able to be saving for them to load the bricks back up.