What you are describing is what's happening just this minute. However, that's not what's coming.

China is already waging the opening stages of a Cold War.

They are working on a ten fleet carrier fleet and they are also building the Type 075, which is an LHD of a similar size to the America class. They don't currently have a VSTOL, but are working on it. They have three Type 075s being built now.

I'm also not sure I am sold on the idea 20 35Bs are enough to defeat the Iranians, frex. Why? Not because the Iranians are amazing pilots with awesome tech, but because the readiness of aircraft at any moment, like ships, can be as little as 1/3.

The V-22 has a roll on refueling capability the Marines have been working on, to be sure, but that will take away from how many 35Bs you can put on the deck. Likewise, the awacs and EW capabilities are not currently present for the Americas either: the Marines are working on the MUX, but it will be a while as yet.

TBH, had you suggested this back in the late 90s, I might have been onboard. I think there is a role for a light carrier, especially when stocked with mud movers, but as is...if we are going to be contesting the sea again (as is likely), then we really, really do need the fleet carriers: we are about to face a near peer, something we've not had in over 25 years.