It would be nice if there were a possibility to edit questions or answers for misprints and other tiny changes without flushing them to the top of the list. I often notice later such blemishes of otherwise good answers or questions of mine (and others).
I therefore propose to add a miniedit button where one can make small changes to a question or answer, limited to changes of 20 characters or so, without affecting the timestamp responsible for the ordering of the questions.