The addition of multiple Stones songs from a long ago catalogue that were never hits in the 1st place allows GT to say "we are adding songs". I think, and I think this is the feeling of other members, it is nothing more than "window dressing". Trying to paint a face on a pig.

This remains a good site for quick go to resources but the song catalogue will most likely continue to erode as licenses expire and GT either can't or won't pay the amount required to extend those licenses. That would be my guess.