in my opinion having liouba back in the court will bring more reception consistency so more offense choices to the setters.
Have you watched Sokolova this past year during the season? Her receiving was really poor in some games. She isn't the same player which is understandable given her age. No way he would make things better, she is a liability as the others. So no, she wouldn't help much. Instead of dwelling on the past, Russia needs to build toward the future.
I do agree though that Russia needs better receivers in the OH position. Ilchenko could be that person but she needs more time. They need other OH's as well to step up. I would've thought Kosheleva would have worked on her receiving in Krasnodar, but that coach had her as OPP I believe, and so she didn't. So I don't know how good she would be at receiving right now since she hasn't practiced it for a year.