I'm a bit insecure when it comes to setters tbh. Yes, in the league, the setters are playing with MBs a lot but unfortunately, this word is not valid for Startseva. I don't know if it would be a good idea to test Efimova, Anufrienko and even Novik before OGs. Yes, Startseva used to be the best setter in Russia but unfortunately now the setter who is playing old fashioned volleyball like her is not much even in the Russian league. I think their main problem is setters, not MBs
The best attacking MBs in the world know where to attack. They don't need a setter to call the shots.
But that's not the primary duty of an MB. There's a reason they are called blockers instead of hitters.
In my opinion, Russia probably needs to go back to molten balls in order for the new generation of MBs to speed up the play so the setters can become more creative. Mikasa evolved the block of russia but they are lost with the offensive side because chaos is everywhere when there's a bad reception. I don't think Koroleva will evolve further but maybe there's still hope for Lazarenko.
But this is something that should be done after the olympics. There's just too little time and I doubt the improvement is going to be noticeable in Tokyo.
If Russia's game plan is: throw everything at Goncha, I expect them to not make it pass the groups in Tokyo. I'd try something new.
The last time Russia tried something different, they've beaten Turkey without Goncharova. Trust me, you don't want any of that.