In previous versions of Exchange using an MMC, opening the Receive Connector properties would give you a sorted list of the IP address(es) that were allowed to relay through a connector. Exchange 2013 haphazardly lists them in some random order. It's not even order the entries were created.
Please sort the list.
Another tag-along to that idea is to make that listbox typeable, so it'll bring you to the section of IP addresses as you type.