For 4.1 I know Shan already mentioned customer notes and removing it from CC and giving it it's own field which would be great.
I also think that it would be good to add a column on the admin/orders.php?mode=search page that would be called notes and when a customer leaves a note that that column in the row for that order would have a link called View Note that when clicked would open a pop-up with the customers note. This way when viewing all the orders from a day it would be obvious if there was a note and would be easy to access it.
Also in provider/search.php?mode=search when listing products it would be nice if there was a visual clue as to if a product was disabled. The same way disabled categories in the category section are dimmed if they are disabled would be great
