There are times when users flag a question/answer with a non-standard reason. Sometimes it is not clear to me that such a flag is valid; though I don't feel comfortable making that decision myself. But I feel that it is bad form to just let it be and dump it on the next moderator who looks at the list of flags.
Sometimes I also see flags that have been viewed by all other mods on the site, and yet no action (either on doing something to the post or dismissing the flag) is taken. And at those times I often wonder why that is the case.
Question Can we support something in the moderator tools to allow mods who have viewed a flagged question to (optionally) leave a comment about why they have chosen to not take any action (by taking action I include dismissing the flag as helpful/noise with no further action on the post)? I think this can help with the efficiency and ease of moderation (so I don't have to dig up the e-mail of all the moderators if I wanted to see what they think about a situation and why they haven't done anything about it), and can help lead to more uniform moderation policies.
(I have in mind something like how users with sufficiently high rep can view flags and help handle them by deeming flags invalid, but with a bit more freedom in making comments.)