We've just introduced a new version of our Make Me a Route feature which introduces a new 'A to B' option in addition to the existing option for circular routes. The routing for this should avoid motorways and select suitable roads and paths according to what you want to use the route for.
Thanks for the suggestion Nathan. We'll look into how we can achieve this.
Trying to create a route point to point (Exeter to Taunton), the route plotted involves cycling along the motorway. Adding an option to avoid motorways (perhaps by default for cycling/walking) would be useful.