All new Russian ships are expected to be fully multi role and multi role systems will be fitted to all vessels... bigger ships have bigger systems incrementally more launch tubes and larger calibre guns, but they all need to be able to do a bit of everything... which means for effective anti sub use you might need a couple of smaller ships to do the job a single bigger ship could do.
Not so true, it have more VLS UKSK and same no of PAKET and ciws as 20385 , only main gun is smaller. But sensors have to be same .So price will be big and main maritime abilities of this ship will be significantly lower.
It wont need long range or endurance if it operates around Russia... but its fire power would release a much bigger boat for other duties further away if needed.
It does but for your average family you might have a motor scooter or two for zipping around town easily and cheaply, while a normal Sedan for a work car for husband, while wife might drive the holiday adventure four wheel drive SUV as a shopping wagon and to go for coffee because its enormous size will make her feel safe.
Why would Russia want scooters with huge saddle bags so you can go on long trips or tours in? Surely you go on long trips in the SUV because you can get all your gear in it and the skis or surf board on top or you get some big heavy touring bikes.
Corvettes are motor scooters... don't try to turn them into touring bikes... a car or even a camper van make much more sense for that role...
ie Corvettes for in and around Russian waters... Frigates too... and Destroyers and Cruisers for further away later on.
With all of those weapons and respective equipment this ship we be expensive. If you want car examples, it is same as you install engine of sport car in car that you want to you for daily shoping in neighborhood. If they need costal ship basic karakut is fine, and they will ned some cheap ASW ships as replacement for Grisha and Parchim ( maybe on same platform as Karakut but without UKSK and having RBU and Paket).
You will have to pack at least 50 members of crew in this ship. Karakut have 39 but 20380 have 90. This ship lack helicopter and have smaller main gun but it have all other weapon systems as 20380 or even 20385 ( UKSK, PAKET 2 CIWS and SAM). So weapons of 2500t ship putted in 1000t ship. This doesn't look a bit problematic for you?
Just look at that picture there are no space for living, for sleeping for eating.
In bow in front of gun you could place some smaller store as most of this space will be used for anchor and its equipment . In Koni class on which i served in that cramped space (and Koni is 2000t ship) in front of gun there were very small store space for paint, ropes etc. Then there is gun, below it, it will be ammo, and on side of gun there will be no space for living as hull is narrowing fast here. Then there is section for C&C which have to be increased for space for sonar room and Paket C&C room. Below this section you will have engine room (my guess as UKSK are very deep so it is unlikely that engine will be below UKSK. Then UKSK, and stern with SAM and Paket.
You have to have food and water for 50 man, fuel, electronic equipment, generators, toilets'... shower rooms, kitchen dinning room, sleeping rooms...
I do not know if you have some sailor experience? Koni was 2000t and it was very cramped inside. Did you ever live on ship?
If this ship will be so good armed and expensive, why are you saving money on cheapest BUT most important thing for a ship? You are saving in its maritime quality and crew space. You will have cramped ship with no space for crew without range and endurance.