Right, so to clarify, what I wrote in post 7544 was about a "fourth carrier by 2025-2030" in general -- it could be either a second 003 in that period, or it could be the first CVN. We could treat it as either.
I do agree that having two combat effective CATOBAR carriers (let's say two 003 pattern carriers for the purposes of discussion) would provide significant combat capability.
The question is about opportunity/cost. That is to say, for the period in which the second 003 could become combat effective, is the money expended on procuring it and working it up to be combat effective, the best way in which military funds can be spent to result in the best combat capability for the medium term future's potential conflict environment?
Or, as I wrote in post 7547:
"What is the opportunity/cost for pursuing a fourth carrier that will enter service in the late 2020s, in context of the PLA's overall assessment of its strategic environment of the late 2020s -- and how does that compare to delaying its fourth carrier to enter service somewhere down the line a few years later (such as early 2030s) and to use money intended for the "fourth carrier in the late 2020s" for other capabilities and assets intended to enter service in the late 2020s instead?"
I see, sorry I missed the opportunity cost part.
IMO, I don't see a tradeoff here and it also doesn't appear the Chinese leadership is making decision with that assumption.
Let's say if the geopolitical environment during 2025-2030 facing severe challenges, what would be China's investment priorities? I think the strategic deterrence would have the highest priority, but they're doing it now. The second priorities would be conventional missiles and air force. The last one should be navy - not that navy is not important, but we're forcing prioritization here and the current navy orbat is already pretty impressive.
But we're not seeing any signs of slowing down in navy buildup. Frankly, if you're not building carriers, what's the point to expand your 052D fleet from 25 to 35, your 055 fleet from 8 to 16, or indeed your amphibious fleet, if all you plan to do is to stuck within the 1st island chain? And if you want to venture out beyond the 1st island chain during challenging time, you'd better to have carriers. What I'm seeing is that they're just proceeding according to plan, across the board, as they should.
And, to top it off, they're still spending frigging 1.3% GDP on defense spending! This is not a sign that the leadership is worrying about any trade-off or opportunity cost. They should really spend 2% - 2.5% of the GDP now.