"" as Default Alt Tag for uploaded and inserted images?

I'm looking for input from the community about default alt tags. Would anyone else find this useful - for the alt tags for images (uploaded or inserted) to have a default alt text of ""? This way, if I don't need to customize the alt tags, the default is already there - saving me quite a few clicks and a bunch of time. 

It would also be helpful if, in edit mode, there was the black ALT tag indicator (so I don't have to click a billion times to check them during the QA process!) Even better: if I could SEE the alt tag when I hovered over the image in edit mode!