More than. few times I've quickly and thoughtless clicked the "Reply" button and send my reply to the actual customer instead of replying to my staff member about a question they've asked me in. note.
I know this is my fault, but I have a feeling that if there were a Reply to Note button at the bottom of a note itself, there's a good chance I'd click that instead of accidentally replying to the customer (which is very bad!).
Anyway, it's a small thing, but would be nice.