I'm not really a fan of pushing hanger extenders very far. While they reposition the derailleur, they don't fundamentally change it's geometry and make shifting worse on the small cogs.
It'd replace the crank with a super subcompact crankset (44/28 or so), possibly with a Shimano GRX front derailleur (smaller cage shape) as a starting point so as to need a less extreme cassette. Or just run a more conventional touring drivetrain.