Just a small suggestion that may have been made before, but I couldn’t find a discussion about it.
When you see a list of flagged posts, you often need to enter the flag discussion to work out whether or not you agree or disagree. Often I also want to comment in the flag discussion before agreeing or disagreeing. It would be nice then to be able to Agree or Disagree with the flag to close it from within that discussion, rather than having to return to the Flags list to clear the flag.