I've found while using relationships it would be good to add a small note to a relationship, perhaps a field to a relationship type.
One such example would be if you had a relationship "connects to" between a switch and a server and you want to describe the particular port the device is connected into along with tagged VLANs. I understand there are much more complex ways to perform this.
I second this idea. We would love to be able to show what port a device is connected to on a relationship.