Both disc and tubeless for performance road are in their relative infancy. Seeing how fast there have been legitimate development tells me we haven't reached any sort of peak. You can't integrate rim brakes into the frameset like you can disc. The ones that have tried (Trek, Specialized, Ridley) have had relatively poor performing caliper brakes. Tubeless tires have gotten significantly more supple and better performing in the last couple of years. The difference between my current Schwalbe Pro Ones and the first Hutchinson Fusions I had is big.
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