Hi Glenn. Sorry for the delay in getting back to you.
To answer your question, yes, I would appreciate some facility to assist with the creation of Uri's for self links and other rel's that I need to include within a representation of a resource.
Currently there are parts of the Uri scattered across the service. The baseUri is part of the site config. The base for the resource is in the route. There is also the UriTemplate which may or may not contain a component of a uri that I need to return.
Currently I have an OperationHandler that collects a portion of this (the base from the site and the portion from the resource) and exposes it as a parameter. That solves a large part of the problem.