I like creating routes on Strava, and I also like following specific trails such as the Jurassic way, South downs way etc.
The problem I've had is its hard to differentiate between one path and another, and finding it challenging to create a route with the trail I want to follow in mind. I've taken to creating routes on the computer whilst looking at a OS map or on a map of the route on my phone and trying to plot the route on strava by looking between the two.
My Idea is, on strava maps to have an option to highlight specific official routes that are in the map window in separate colours so it's easier to create routes along them, and also the ability to search for specific routes and highlight them that way as well. For example the pennine way in red, Jurassic coast in blue etc
Finally, the ability to record how much of each route you have completed in activities.