Our carrier is fixable by revision, and besides according to the battle reports I'm not really seeing any deficiency in our current Wasp Nest besides the problems with the elevator. As I've said before what's deficient is our support vessels, and shockingly so. The Archer has a smaller gun than even it originally intended and a single hit will break it apart, and we still have very few options in the face of the Seaweed AA cruisers. Our own cruiser is the most efficient use of our action, rather than just dumping more aircraft on their fleet in the hopes of overwhelming their anti-air defenses, a clearly failed strategy considering we have never even reached parity with them on the sea, especially now that they have carriers of their own.
As what Kot said, the Wasp Nest can't launch the Haast fully loaded, and certainly can't launch the Thunderbird. Future jet aircraft will also suffer the same problem, stagnating our air power at sea as we can't use new aircraft on our carriers as well. Meanwhile, the Santos
may be able to launch a Cannalan jet, depending on whether it has a catapult, but if they can we will definitely lose the naval battle badly. I would disagree about jets not being useful on carriers, as in naval battles numbers don't matter so much (our carriers are said to be carrying the Expensive planes while the cheap ones scramble from land) and short range is all that's needed for CAP. Jets outclass traditional fighters one-for-one. Also, letting the Haast launch with its full load of two Dolphins would be another "add-on" benefit of a new carrier.
Revising a longer deck, ski jump and catapult would be beyond the bounds of a revision, so might as well make it a full design. Also, we got them down to Basic Naval Advantage before with just the Wasp Nest, before they introduced the Santos carrier. If we introduce a newer better carrier, I daresay we will be able to do it again.
Also, you quoted an older votebox, it's fixed here:
(4) UFS-CV-40 'Tiger Star', Pattern A: evictedSaint, Andrea, Piratejoe, Powder Miner
(0) UFS-CV-40 'Tiger Star', Pattern K: CatamaranCat
(7) B3 'Compensator' 300mm Coastal Gun/Naval Cannon: Kashyyk, khan boyzitbig, Taricus, strongpoint, Nav, 10ebbor10, GUNINANRUNIN
(3) UFS-CV-40 Zheleznogorod B: Kot, Mulisa, Azzuro
(1) UFS-CC-40 Pattern F "Cavalier": Baffler