The 2000% drop rate has been in contention for many, many, seasons. As Bagstone points out, it attracts players that want to utilize PTR server time for drops rather than tests.
It took Blizzard about 3 years to actually figure this out, despite it being very obvious and people stating how to fix it (add an item vendor).
Good for Blizzard, I suppose. But to me, it just demonstrates how truly dense they are and their opinion of the D3 community.