Google Play is being run very poorly, they removed it in error while attempting to roll out new app verification rules (which we successfully comply with). Should be back soon.
We've definitely thought about all these options many times. The most obvious thing is that new innovations and change are needed to the home and community aspects. The 5% is indeed more active, but there's also extremely low desire for social users to pay for things, and high expense and brand damage due to all the things that come with running a social network like moderation. According to users, our mods are simultaneously both leftists and rightists trying to silence people or whatever.