The problem is by who or how is determined a "legit user". There should be some trusted curators that allow some user to get to the trending page, somehow like it´s happening in the MSP, that you can be banned if your content doesn´t meet the rules or guidelines aproved by the mayority but that´s a hell of a job that´s not likely to be done.

The posibility of filtering content is as easier solution that migth work. Making the job easy to the people that want to curate quality content. I don´t know if Smart Media Tokens will have some effect on this since I don´t really know the posibities that they open, but I think (I trust) the platform will continue to develop and will find a way. :)