note the current trend is to use the design flexibility of CF composites , and increase the diameter of the lower race
to something like an inch and a half , and retain the 1 1/8th up top.

Dont like chasing the high tech latest thing trend ? lots of 1" threaded steel fork bikes are still on the road.

perhaps someone makes a 1.125" fork steerer that is Butted at the bottom, like the steel 1" steerer's are.