UPDATED. December 27. Thread closed. Thank you for the questions.
Q&A sessions on German tanks with Mr. Hilary L. Doyle appeared to be rather popular. As a continuation of this good tradition now you have a chance to ask World of Tanks warfare expert Yuriy Pasholok who has got outstanding knowledge of tanks in general with his primary specialization being Soviet tanks. He is also the co-author of recently published Maus book.
Post your questions in comments to this post, I will shortlist everything with love and care and subsequently provide replies the way I did with Doyle's ones splitting them into bulletins. The deadline for your questions is December 23.
While considering what exactly to ask, keep in mind that Pasholok may not be familiar with advanced game concepts and game design issues, thus try to keep your queries more reality-related than WoT-related (Yuriy prefers 1:1 scale vehicles, if you know what I mean ;)).
PS: you can repost old Qs from this thread, since there were few of them on Soviet tanks.