Thanks for this assessment. I agree with all the constraints you were mentioning. At this stage Steemit can neither provide sufficient funding to actually conduct research, nor are there enough scientists in the community to serve as experts or peer-reviewers in the numerous scientific disciplines. However, I believe that these constraints are not fundamental but related to the current scale of our community. If Zuckerberg would want to start funding, evaluating and publishing scientific research using Facebook he actually could do this. So Steemit could do it as well, it´s "just" that we would need a few hundred million more users. Just a matter of time, no? ;-)