There are a couple of features that I keep wishing the web site had when I'm planning a route:

1) I would love to be able to display just a subset of the routes that I have in a folder.  There's already a checkbox next to the routes and a drop down list of things you can do with the selected routes.  It would be nice if one of the things you can do is choose to display (or to hide) the selected routes when you click the map symbol to display the folder.   I hope that makes sense.   When planning a trip, I end up with a bunch of routes in a folder and often want to compare just two or three alternatives I'm considering for part of the route.  Or sometimes I want to look at a subset of the routes I've saved to see how I might connect them.  I end up having to create a bunch of  folders and move routes back and forth between them to do these things that would be done much more easily if I could just choose which routes would be displayed in the folder view.

2) When I'm planning a route in a part of the world I'm not yet familiar with, I'll often hear about a a town (or something else that can be found on a map) and want to know where it is in relation to my route.   It would be nice if there were a way for me to enter the town's name and have it identified in some way on the map.  My workaround is to open a separate cycle.travel tab in the browser, open a fresh map, use the route starting point field to search for the town and put a marker there, then return to the tab where my route is loaded and refresh to pick up the new marker.  It works, but it's something that I do so often that I wish it were more streamlined.