Thanks for the idea, Tom. Unfortunately, the Alfine 11 sets a limit on the input ratio. The lowest allowed is around 1.9 (which the Acme uses). Swapping the 24T rear pulley for a 28T would take that to about 1.6 and would cause problems with the hub. Too bad, because that would be great otherwise. I've even been cautioned not to overload the hub by standing while climbing.