A couple of things:
1. Ukraine's defense industry had some success after independence. For example, it equipped a few other newly independent FSUs with new T-72s, BTR-80s, BMPs etc. Ukraine also sold some equipment to African countries. But these were limited markets and eventually their defense industry withered away although they are successful in modifying older designs which have been successful. One interesting thing about Russia's tanks is that previously Russia relied on the Mariupol factory in Ukraine for cast turrets, which are generally stronger than welded turrets, depending on the expertise of the welders. Which means I wouldn't count on Russian turrets being all that strong.
2. Russian crew drill is horrible based upon several videos I've seen. If our crews pulled some of the same stuff the First Sergeant would smacked them with his helmet or worse. In one instance, they were proud of the fact they hit a 1000m target on the third round. Heck, we boresight and zero further than that.