Is it true that now for the use of Sniffer on 7.3 - Blizzard begin to block accounts? So you are silent that there is no information about the update on the new build?
*before release 7.3 Blizzard renewed the license agreement. http://eu.blizzard.com/en-gb/company/legal/eula
Maybe nobody wants to update it or just doesn't have time
But seriously if there really are issues with 7.3.0 it would be nice to know which kind of issues