The question What is the function of this chord progression in Schubert's “Winterreise”? was closed as needing "details or clarity."
In response to various comments, the OP did provide additional clarity, and, as of this post, four of us have voted to reopen.
However, @Richard addressed the post in his answer to On closing vs. tolerating weak questions:
even after the edits to the question, the question still seems to be "what is the analysis of all of these ca. twenty-seven chords in this section of a Schubert Lied," which is far too broad for our site.
In light of Richard's comment, I first edited the question, thinking it just hadn't been made sufficiently clear. I then worked through my own analysis in hopes of answering the question if and when it was reopened.
Which led to
Richard is right. The analysis is complex and touches on a number of analytical issues. There are multiple layers of analysis involved, each with it's own set of theory concepts that may or may not need explanation.
The OP could still receive a helpful answer that could also be helpful to the site at large.
A possible benefit from "good/interesting" but over-broad or over-complex questions
A summary answer could be provided, which would include links to other relevant posts for "further reading". So a hypothetical answer might look like:
The progression at large is Em moving to Dm, to Gm, to Am. In measures XX - YY, we see such and such chord, etc. ...
The second chord in m. 16 is a common-tone French augmented sixth chord. C.T. Aug6 chords operate in the same way as common-tone diminished chords, which can be read about in A chord progression from Leavitt: how to analyze it correctly
Additional links within SE MP&T could be provided, thus connecting a variety of topics and creating the kind of web that seems helpful to the overall purpose of the site.
Thus, a question like this one can become a hub tying together a variety of different issues, even if the core question is not one that in and of itself fits the site.
The recent question Improvising: can't play what I hear (internally), on its face, is too broad, opinion based, and generally a difficult fit for this site. It also touches on an immensely popular topic that generates many questions and answers.
Rather than vote to close the question, in this case I tried giving a general answer and then provided a list of related questions that touched on various other aspects of the topic.
Barring a rush to close the question in light of the present post, it seems to have worked, at least in the short term.