Looking at the new cassettes in AXS groupsets (not to buy just nerding out) and they are now running 10t smallest cog with corresponding smaller chainsets.
Why have they gone smaller all round when companies like Ceramic Speed make larger jockey wheels, and all the top TT riders are running larger rings to reduce the chain wrap angle (easiest way I can describe it) which reduces friction (or so their studies suggest).
Seems the two ideas are moving in diametrically opposite directions, I would have thought what it would have been better to go larger since on most UCI bikes you’re nudging the weight limit anyhow so a few extra grams in chainrings wouldn’t matter. Would also mean anyone with an 11-speed freehub could drop a 12-speed cassette on and adjust chain rings accordingly for a cheaper upgrade route.