Hey Jeff, update (index) stats with hashing has been available since 2012 (v15.7 ESD#2); you stressed SP130+, is this due to the bugs or something else?
We did notice that high domain hashing might produce less accurate histograms, and hash-based statistics may use a significant amount of tempdb buffer cache.
We also saw high CPU/IO usages related to update stats, not sure if SAP has a fix for CR# 757246.