Well, it would be neat to see who's where. And a blinking lightbulb once a champion or the harrower is up. Add the properties, players and landmarks of all shards as "layers" that can be enabled and disabled.
Oh and if you zoom on Britain a little an indicator would be awesome: An indicator of how many people are gathering for an Arcane Focus gem (assuming all Britains on all shards have the circle at WBB).
Help people meet up. Help people find other people. Add support for the now in game vendor search, too! --> Help finding items! Help players find customers!
Players that are visible on the map should also be allowed to add a status message - maybe 140 characters. Like: "Waiting at WBB, need Arcane Circle" or "WTS: Minax artifacts, meet at Luna moongate". Also: "Need LRC suit, can't find on vendors, meet at WBB". And: "Got all keys for Medusa, looking for group! Meet at Luna moongate!"
These are things that would come to my mind. Things that I would think they would add usefulness.
@Petra Fyde, you had a dream come true, now let's please finish this dream together. Let's make it a dream come true not only for you but for all UO players. Let us add usefulness, let's add liveliness. Right now your beautiful map is as dead as most of the under populated (a.k.a. dead) shards.
No offense meant.
Please don't answer with "we don't have enough developers at Broadsword, we don't have the capabilities [to make this game fun again]". I am so sick of hearing this. UO needs liveliness and less death. Something just needs to be happening.