Bridleway option?

Unless I’m missing something we currently have Any/Paved/Gravel/Night options in the route planning. Could a Bridleway option be added for use with the OS map? For example, if I set a start point at one end of a stretch of b/way and an end point at the other it just wants to route me on roads. It would be really handy for joining up sections of b/ways too.

Thanks, Steve.