"Meaningfully large" is an ambiguation of his much more unambiguous insinuation that the 055 is to entirely displace any ship designs between 6,500t and 13,000t in the PLAN ORBAT, which it actually sounds like you are advocating as well. So no traditionally-sized destroyer at 7-10,000t but instead we are to believe that a fleet of super-corvettes, super-frigates, and cruisers is in the cards for the PLAN:
Regarding the "ambiguity" factor... It would depend on what his ratio of super corvettes, super frigates and large destroyers/cruisers is for me to see how reasonable his suggestion is, as well as what his projected timespan for completion is. If he's suggesting a 1:1:1 ratio of super crovettes, super frigates, and cruisers in the early 2020s, then I think that's definitely not going to happen.
If it's a 2:2:1 ratio to aim for completion by the early 2030s, well then yeah, I think maybe it is plausible.
As for what I advocate; I'm been consistently saying I think a ratio of about 2:1:1 between 4000-5000t frigates, 7000-8000 ton destroyers, and 12000-13000 ton large destroyers/cruisers, would be viable to aim for completion by the mid to late 2020s.
So let me get this right. You agree that Liders will be not be built in sufficient numbers to replace Sovs, Slavas, and Udaloys. You also believe that because you haven't heard much news about Project 21956 that this will not advance beyond conceptual phase, even though we have far more evidence for this ship than we have for either PLAN super-corvettes or super-frigates. You also believe that a "significant" part of their future fleet is going to be made up of the 4,500t Gorshkov. So you must believe that the Gorshkov class frigate will be the primary replacement for Russia's current crop of destroyers and cruisers, yes?
I think you are conflating a number of different strands of discussion and my opinions about those topics incorrectly.
First of all, I've never said that I believe Lethe's suggestion of super-corvettes or super-frigates is going to happen -- that is to say I've never said that I believe such projects are currently under any sort of development (because we obviously do not have rumours of that). However, what I did say is that in the more distant future, I think his fleet structure could be a workable one for the Chinese Navy. In other words, me saying "maybe" to his projected fleet structure is not dependent on us needing to have any sort of evidence for a super-corvette or super-frigate to be under development at this stage, because my acknowledgement of his proposal is in my mind, only a proposal for the more distant future to begin to be carried out post 2025 anyway.
The second topic, regarding the Russian Navy, Lider and Project 21956, is completely separate from the first one about his own projections for the Chinese Navy. I said in my last post that using the Russian Navy's plans as some sort of allegory to support or go against certain force projections for the Chinese Navy is dodgy, and I stand by that because their shipbuilding is all over the place and their publicly announced plans are a bit all over the place too.
But regarding the specific Lider vs Pr 21956, I stand by my point that Pr 21956 does not appear to have moved beyond the initial concept design shown, and that much more noise is being made about Lider. This has no recourse or effect regarding Lethe's fleet structure proposal, because that is after all just a proposal for fleet structure and he is not saying that the super-corvette or super-frigate are under any sort of active design or development.
As for what I believe the Russian Navy will be; yes, at this stage I do believe they are intending to make the Gorshkov class FFG be the workhorse of their blue water capable fleet in the near future, but it also sounds like they're going to build a decently sized Lider production run to complement it at the higher end. How well the execute both of those programmes going forward is another matter... and at this point I think it would be presumptuous of me to project any sort of force structure ratios for a navy that I'm not intimately familiar with.
And again I'd like to emphasize that what the Russian Navy chooses to do and how they structure their surface combatant fleet does not necessarily have anything to do with how the Chinese navy can, will or should structure their fleet.
edit: I think the difference between what is being talked about for the Russian Navy's future fleet composition (including Lider, Gorshkov and Pr 21956) vs what Lethe and you and me are talking about for the chinese Navy, is that for the Russian Navy we are actually able to make some inferences based on their publicly announced reports or disclosures of ship designs and shipbuilding schedules which constrains our ability to throw around different ideas for their fleet (e.g. the Pr 21956 not being mentioned at all in the last few years suggests it has not advanced beyond the concept design stage and/or at least is not under consideration by the Russian Navy in any serious way). Whereas for the Chinese Navy we are much more reliant on rumours in terms of both future designs and the production run of those designs, which together gives us much more freedom to throw around potential ideas, especially for the more distant future... and that isn't necessarily a good thing lol.