Voronkova-Fedorovtseva duo looks like to be Russia's best OH duo at the moment. The former improved her reception, and the latter is vastly improving at her age and shaping up to be a super-volleyball player in the future Parubets can be a purely defensive OH and play like a libero role if she is not fully recovered. (Koshe can still be useful as an offensive OH sub, or even as second Opp if it's fine with her). I would also give chances to Smirnova in VNL, she can be a good backup to Goncha.
That'd be great, but due to the limited number of players in VNL I think Busato will only test Lazareva, Goncha, and Kadochkina as Opp. Maybe Smirnova will just play in Universiade.