How about a "Welcome" library ?
I only thought of this today and I don't know if it's a good idea or a bad idea - but here goes....
I noticed that there's now a wide variety of musical styles here including jazz, rock & pop, latin and other ethnic styles of music. I wondered if it might be helpful for some of these to be offered in a 'Welcome pack' for new Ardour users? Obviously, no-one would be expected to contribute their entire album! But maybe if they had a particular track that demonstrated some of the features of Ardour or Mixbus they might like to donate the Ardour session file. The basic idea would be to give new users something to experiment with while they were taking their first steps with Ardour.
Obviously it would need to be done in such a way that recipients couldn't subsequently go around claiming ownership of the work! So maybe there could just be some basic instrument tracks (without a vocal or a lead instrument say) or alternatively, there'd be some jazz or traditional songs that are now out of copyright.
With the wide selection of music that's been posted here I'm sure there could be something to suit all tastes - and I think it would be very encouraging for new users to see the possibilities that Ardour and Mixbus can offer.
Good idea or bad idea..?