This is actually the second meta question about Looking for feedback! Am I ready to take photography to the next level?. The other meta question focuses on the "starting a business" aspect. But, I think at its heart (and especially based on comments and edits from the original author) the question really is asking for critique of the portfolio.
I'm definitely in favor of opening up more to questions about and even critique of individual photographs. But I'm not sure what to do about the whole slate of photos thing. A question about a specific aspect of a photo like How to capture the scale of a scene? can help not just one person, but also many other people later (like this).
We've got some great questions like How to compose such that the context does not overpower the subject? and Is composition after capture against any traditional photography rules? which have answers that can be read by someone not interested in that specific photo and still be educational.
I'm not sure that's really the case with "is my portfolio of professional quality?" At best, someone might submit a followup of "okay, well, how about mine?"
How should we handle these?