At the expense of sounding like a dick, I don’t like the layout, the YouTube interface for the videos is a mess (setting to landscape on my phone and they just disappear) and there’s no sound which is weird on a 5 min video.
The routes are all fairly well established covered in both guide books (that I can carry with me) or on mtb trails website which is a much more usable interface and has more trails including grouping by areas.
It feels as though the effort has been put into a turning page layout than the content. And for the inevitable, if you think you can do it better then go ahead, there’s no need a number of people already have.