When I review questions, I sometimes wonder if I should hit "edit" or if some other reviewer is already making the editing change I intended. While I understand edits are lined up against each other, while editing we get a notification if a new edit is being applied, and while answering we get a notification if a new answer is submitted.
Would it be too discouraging to have a block appear to notify the reader that another user is currently attempting to edit or answer the question he is currently viewing?
This is not a notification that it HAS been edited or answered, just that one of the two processes (or both) is being attempted.
The flag to notify a viewer about a particular in-process edit or answer should cease if it is taking over a certain length of time (time based on some average metric on time taken for edits/answers), or is inactive (abandoned?) for a certain (shorter) length of time.
Or is this suggestion too discouraging or too focused on minutiae?