It would be nice to be able to comment assets & folders in the content browser.
As an example, right click on a blueprint, and down the bottom have a text box to put a small description of what the blueprint is about. This could Also be good for folders.
Another way around this would be for UE4 to be able to open .txt files from the content browser.
As a side note. Is there somewhere we can see other user suggestions to make sure we are not doubling up? Like a huge sticky with everyones wish list. The trello is great, but it doesnt cover all the edge cases.