Make 'Notes' more noticible
At the moment there is no way of telling if there is any notes in a product, they are not getting used because of it - they could be extremely helpful with a small update
Next to the 'Notes' option within the product, add '(#)' showing how many notes there are in the product between the brackets. So its obvious that the product has notes in.
Adding a Notes column along the Manage Products page - similar to the archived column with the simple 'Yes' or 'No' to tell you if the product has notes or not