When I wrote my bachelor thesis about democratic methods in online communities, I found out that all these crowd-sourced sites had one major problem. When they start, senior players in their field of work laugh at them because they don't have much content. So they try to get as much as possible, trying to get as many new creators on board as they can. Later, when they have grown enough, the senior players in the fiel…
Being a community manager is a thankless, unrelenting assault on your confidence and emotional and social stability. The social Internet's linchpin has almost always (since as long as I can remember) been that it requires a certain kind of person to be an unpaid community manager (by any name), and nearly every site you visit (wikipedia, stackoverflow, reddit, etc) makes use of these nonployees.
Instead of
"Hunt down bad content and delete it!"
they should use
"Hunt down good content and promote it!"
Why not create a premium version of the product that features only chosen content?
Creators can do what they always did and maybe they're even motivated to become "premium creators".