I would like to be able to create a list of trails that I have yet to run. Favorites are okay, but honestly, they are hidden 2 clicks away from the home page-- please solve this usability issue.
I'll add that the mass list of favorites is unwieldy. We definitely need some more controls over filtering that. E.g. the up next, or todo, top-ranked, or flat -v- climbs. etc. Maybe add custom tagging so that we can apply our own interpretations?
So as you noticed, we renamed the old "to-do" list as "favorites", but admittedly need to do some more work to make this list more user-friendly. We've definitely thrown around the idea of being able to have more than one list, similar to your idea of custom filters.
Thanks for sharing your feedback on the current functionality and your suggestion for improved functionality. While not on our short term to-do list, hopefully we can get that feature built out in the future.