This is a feedback not an idea.
I've been using Youscian for the past three years, and the general trend I'm seeing is that old technically challenging songs (lvl 9+) are being replaced by easier lvl 8 songs.
What's worse is that these new songs are EDM laden tracks which don't have much guitar (Blackpink songs seriously ?!!)

I used to enjoy playing RHCP, Jimi Hendrix & Eric Clapton. Now, all I see is Biliie Eilish, Blackpink and some indie bands which no one has heard of.

I don't mind the new artists, but Youscian team when you tabulate a song, add some solo, add some lead, don't just make plain old rythm.
The real thrill of guitar comes from shredding solos not hitting the same chord a thousand times.