I never saw Russia needing a cruiser or destroyer - their frigates are usually armed way better than most destroyers. Now they can make the turbines for their frigates, why bother?
The thing is that their Corvettes can barely defend themselves, and their Frigates are slightly better armed in terms of self defence but there is no way even with 30 Corvettes and 30 frigates that they could operate two 40K ton helicopter landing ships and support a landing operation.
For the helicopter landing ships to be useful... remember they are talking about them having a 60 day endurance, which suggests they wont be using them to land in Kaliningrad or the Kurile Islands.
If they are going to use them further afield away from ground based air defence and land based fighters they are going to need aircraft carriers...
And that is a big hint there... if they only wanted corvettes and frigates then why waste time overhauling the Kuznetsov or the two Kirov class cruisers let alone the Slava class cruisers. Even the upgrades of the Udaloy class ships would be a waste of time... they have a Frigate design and a few corvette designs... just bashing out them would be the solution.
Except two 40K ton helicopter carriers means they want to see the world, which means corvettes and frigates are not going to cut it on their own... great for the waters around Russia, but no good further afield.
Upgraded cruisers and destroyers and the Kuznetsov gives them a basic global reach but over time they will need new destroyers and some new cruisers... we are not talking hundreds like the US Navy, but I would think four cruisers each at the Northern Fleet and Pacific Fleet would be useful, and perhaps 6 to 8 destroyers for the Northern Fleet and the Pacific Fleet and maybe 4 in the Baltic and Black Sea fleets too.
The two 40K ton helicopter carriers in the Northern Fleet will probably be joined with two more for the Pacific fleet though one each might have the helicopters and drones while the other has 1,000 naval infantry and armour.
Two CVNs would round things off and the the upgraded ships could retire over time... leaving a very modern and capable fleet.
They will come with a universal uksk-M for any kind of big missile.
If they can get layering to work it will allow enormous numbers of missiles to be carried... especially the very small missiles that are not very efficient in the big launch tubes designed for huge missiles...