It's funny that this feature has been there for I don't know how long, but it takes a special need to find that it is there. I was doing a call blitz and needed to have access to different products at a moments notice.
So, here's a couple of suggestions that would make it better for me, and possibly for others. Remember, it is all about information access -- whether about a contact or about things we need to help our customers.
1. Give the ability to add hierarchical levels - like folders. I'm in tech sales, so I would use folders for Software, Hardware, Cloud, etc. Then there would be folders under folders.
2. When managing links from within the dropdown button, give us the ability to browse to either our HDD or somewhere on the net.