The thing is, the paid tier of GPM is really only for on-demand streaming of the music catalogue and removing ads in the radio. As an upload-only user, I really see no reason to pay money for a service that I am fully enjoying for free. If Google were to add back (and continue developing) the removed My Library features and decide to make a payment tier for use-cases like mine, I'd happily subscribe. Their focus on "your library anywhere, with extra features" is something that really stands out. I'd hate to see GPM turn into just another stream-what's-licensed service.