I had worked my way up in every line to tier 8+ awhile back and the blueprint rewards from dailies had always been random, sometimes country fragments, universal, once in awhile a tank I didnt have. But recently I only had the IS-4 left to research and the last 5 fragments I received from dailies were all for this tank… Thanks WG… now im a senior technical engineer, much easier then i expected having to farm USSR fragments while getting other randoms. Was this a change people knew about? dont remember hearing anything about it. Def makes it worth unlocking lower tier tanks so you get more fragments for higher tier tanks.