I built that list with the intention of it being a list of streets you haven’t completed that would be progressed/completed by running the route. Going with this intention, that list of streets should change as you complete them (completed streets should be removed from the list).
That’s not how it’s currently working, though. 
If people are interested in multiple lists of streets, then the furthest I’d probably want to go is two lists: one list of incomplete streets that this route will touch and one list of all streets this route will touch (regardless of whether or not you’ve completed them). My instinct is that the incomplete street list is way more relevant than the full street list - would love to hear opinions on that.
(Oh, for User Setting: Hard Mode I could see a third list of streets where the route would complete a node; regardless of whether or not the street is complete)