Tech Tree Focus: USSR Data Results

GeneralDirection: Last week we kicked off the change to the Tech Tree Focus events, shifting from a 50% credit discount on the vehicle purchase to a 40% credit income bonus for the listed vehicles. You've told us that you're unhappy with the change, and so I wanted to share some gameplay data on the event that ran last week. We'd like to get your feedback on how you felt the event went, and whether or not you feel the increase in battles is enough to warrant the event.
Here are the tanks included in the event, as well as the increase in battles compared to a similar period in which the tanks were not part of an event.
BT-7 - 20% more battles over the event period
A-20 - 14% more battles over the event period
T-34 - 26% more battles over the event period
T-34-85 - 9% more battles over the event period We're weighing the success of the event and may make some changes for January. We'd love to hear ideas on other ways this event could be run, other than returning to the 50% discount (we already know that's an option).