I personally loved the way the OLD site worked better than the way this one works. For those who weren't here when the old site was in its glory days, you could come in as a reviewer and make as many reviews as you wanted to. Sol, I can't remember if those reviews carried points in case the reviewer wanted to join later, or if they received nothing but the pleasure of seeing their review written. But what I also liked about the old site is that a paying member could not proceed with posting a chapter or reviewing a chapter until they answered the reviews they had received. If you recall, the recipient of the reviews had an opportunity to rate their reviewers on whether or not the review was helpful, yada yada.
To answer your question above, I think it would be wonderful to return to the requirement of being a premium member in order to post. We have so many who come on board, post a chapter, and then disappear without a trace after we reviewers have spent an hour doing an in-line review that will never go anywhere. I am almost skeptical today about doing a review of a newbie's work for that very reason. I don't need accolades for my review, and the writer doesn't even have to like it, but what I do need is at least an acknowledgment that my review has been seen. That makes me want to review their next chapter, if they happen to post one. Someone recently complained they were not receiving reviews on their chapters, but in looking back, I think it's because the reviews the writer received on the first chapter were not acknowledged, so no one felt the need to review the second chapter. I think this method filters those who are serious from those who are not. I vote yes because I feel that if they pay to join, they will be a serious addition to our team and will post more chapters.