This question on differences between two types of German doctoral programs was originally rightfully put on hold as being unclear. The original poster then added information, and the question edited such that it appears to me to now by a quite clear and useful question. Its reopen vote, however, doesn't seem to be going anywhere. Is there a reason for this?
First of all, let's go back to the Revision history of the question linked to this meta. See https://academia.stackexchange.com/posts/34431/revisions
I was the one who cast the first Reopen vote after the OP edited the question. Then jakebeal edited it again to make it better and voted to Reopen. Then the question just sat there until StrongBad, one of our mods (I was going to say our excellent mod, but all of our mods are excellent), reopened it.
The reason I casted the Reopen vote was because I am a regular Review queue user. I saw it in the Review because the OP edited it. I examined it and decided to vote to reopen. I believe jake is also a regular Review user. He probably saw it in the Review and then did the Edit and Reopen.
Now, here is the problem I have observed. Not too many of our users use the Review queue. As far as I know, only a handful are regular non-mod Review users. You can check the stats for each Review category. For example, only Peter Jansson and I have three digits number of Reopen reviews. I believe this is one of the reasons the subjct question stayed on limbo stage for so long. Had many users seen it in Review, it would be reopened (or left closed) without mods' intervention.
My answer here naturally raises a question, how do we encourage our users to use Review which is a very good moderating tool? I don't have a good answer for this question. I just keep doing Review myself.
Well, the reason is that the whole
close -> improve -> reopen strategy is not exactly working well all the time. In my opinion, the strategy
comment -> edit -> problem solved works better. It is just necessary to decide whether you prefer some good questions staying closed or some bad questions staying open. I prefer the latter.