Thanks for your ideas on Route 66! Suggestions from riders who have been to the area are big considerations for us as we choose a route.
Mcallawa, the route you described was actually considered as research was done, but because of some of the reasons you mention here (bad pavement, discontinuous frontage road, in addition to unsafe riding conditions), we agreed on the route you see on the New Mexico Touring Society website, after doing research and collaborating with that group.
Jamawani, your suggested route sounds beautiful! However, when conditions allow, we are trying to keep the route as close to Route 66 as possible.
In general, for our Bicycle Route 66, we are trying to follow Route 66 as much as possible, as long as it would provide a good long distance bike tour. The route will, however, veer off in places where we feel like Route 66 no longer makes a good bike trip (keeping our members and customers in mind). Things that we consider are safety, traffic, pavement condition, shoulder width, visibility, available services, scenery, and historical points of interest.
If you have other ideas/suggestions, please keep them coming. We definitely value your input.