Saving Internal Messages Per Customer in the Customer and Vendor Central.


I like how you can create External and Internal Messages for customers within Settings. 
I love how specific it is for: Quotes, Sales Orders, Shipments, Invoices, etc.. 

Not sure if this is too much to ask for, but is it possible to save Specific Messages that are saved for each of my Customers? 
Just wanted to propose this idea, I think it would be super awesome!