Inc seems much more open to trying things now than they were 2 years ago when you suggested something similar, perhaps it's worth bringing up again?
Other people have brought it up repeatedly. It's not an obscure idea.
That being said I agree with you they are open to more input, and I think something like this could have a chance to happen if the Steem price ever recovers and Steemit's budget (as well as SPS budget) improves to the point where there is more interest in expanding/hiring.
I would reiterate though, that relevant and highly-qualified economists and social media experts are in high demand, with in some cases almost unbelievable levels of compensation available from big tech companies and well-funded blockchain projects, and such expertise won't come cheap nor will it be easy to find someone like this looking for work.
I would actually somewhat fear Steemit bringing in some marginally qualified B players with poor understanding and bad ideas and it doing more harm than good. I don't think that is without basis.