This probably belongs in the suggestions forum, but I think it would be useful and perfectly within the realm of IC-ness to have "public" instances of all of the Ages currently only available "privately" in UU. Heck, it almost makes *more* sense from an IC perspective if this instancing thing is a Yeesha construct. Just as an example of what I'm talking about, let's look at Teledahn.
In UU, Teledahn is a privately instanced Age. You can only get a group there if you invite them all personally, and big parties are often a real pain to coordinate. In Live 2.0, it would be nice if there were a publicly accessible link to Teledahn provided in-game (say, in front of the Library as it was early in the Ubi beta) that would lead to a public instance of the Age, where everyone went regardless of being invited. You would also be able to access a *private* instance of the Age through your Relto Bookshelf, enabling you and perhaps a small group of close friends to wander around the Age alone, and solve puzzles at your leisure, since the public instances would probably be blazed through rather quickly (or not, if Ahnonay's evilness is any indication of the complexity of the intended multiplayer puzzles

). Public instances of the Ages would appear in your Nexus list, which could be somewhat re-labeled to better accommodate the new setup. Instead of City Locations, Public Links, Private Links, and whatever the fourth one is, you'd have City Locations, Neighborhoods, Public Ages, Private Ages, and if still applicable, that last heading that continually escapes me

.
It's not really a revamping of the current system, just a little tweak to make it easier to play together with a group / as a group.