When a question comes up in the re-open queue because it was edited, the default is to show the side-by-side comparison of the pre- and post- edit. There is another 'tab' available that will show the question as it appears after the edit. The view highlighting the changes is fine, and probably what I want to look at first, but there is a key piece of information missing, which is why the question was closed in the first place. This substantially increases the required effort to review the question, since I first need to try to assess why the question is closed by either skimming it or switching tabs to see the close reason and comments, then go on to assess whether the edit makes enough difference to warrant re-opening.
To those who may protest "but you should spend enough time to thoroughly assess the question no matter what", I assure you that I do give each question I review a fair assessment, however some reviews would be much speeded along if I started off knowing why the question was closed in the first place. Particularly for edits that simply add a paragraph to the end of the question (about half the questions I see in re-open, I'd estimate), it's usually straightforward to see whether the new paragraph makes the question more on-topic, or more clear, or narrower, but if I conclude that the edit makes the question clearer then realize the question is a duplicate, it's just frustrating.
So, would it be possible to add the close reason somewhere on the default view of the re-open queue? For instance, there is a banner that says something like "this question was edited after it was closed, should it be re-opened?"; that could read "this question was edited after it was closed for being off-topic (homework/engineering/non-mainstream)/too broad/duplicate/etc."
If this is better suited to mother-meta could migrate it there, but as close-reasons are on a per-site basis, presumably this needs some consideration on a per-site basis as well.