As I recall, one problem was you got silent corruption if you ran out of disk space during certain operations, and there were things that took significantly more disk space while in flight than when finished, so you wouldn’t even know.

When I was at Microsoft, Source Depot was the nicer of the two version control systems I had to use. The other, Source Library Manager, was much worse.

iirc, we called it visual source shred

kinda nice to know it wasn't just our experience