Interesting. The containerized weapons packages sound a lot like the LCS' "mission modules," which were supposed to let those ships be changed around on the fly to fit a bunch of different missions (anti-surface, anti-submarine, mine clearance) depending on what capabilities were needed at any given moment. But in practice the mission modules turned out to be a huge pain to support and change out, so the Navy has mostly dropped the idea and set up its LCSes in fixed configurations.
What are the Russians doing right with the Project 22160s that made the idea practical for them when it wasn't for the LCS? Or is it just a case where the 22160s are too new for practical experience to have taken the shine off the concept for them yet?