More durable displacement limits for naval arms control

With hindsight, what treaty displacement limits would balance arms control with useful and future-proof warships?

Roughly 27,000 tons for carriers, 40,000 for capital ships, and 15,000 for cruisers, with a larger carrier allowance than the historical treaty provided.

The answer proposes limits that leave room for useful ships instead of forcing designers into narrow compromises. A 27,000-ton standard carrier is considered workable, but the historic allowance for only a small number of such carriers would remain inadequate. Capital ships receive a suggested 40,000-ton ceiling and cruisers 15,000 tons. The exchange distinguishes a sensible unit limit from the separate question of how many ships each navy may possess.