Think of this:
URU is one of games that is happening in our world and in our time. It's not like LineAge, SW Galaxies etc. That's why it may allow the people live in this word. You have your home, your cabinet, your workplace. You can browse the web (or at least it's part) with your KI. I think it will be good when someone returns to his home at evening, turns on computer, connects to internet and runs URU. And from URU he can watch news, read his e-mails - just as in usual browser. It's not hard to do with ActiveX components - you can implement web browser feautures in every MFC program. And when system browser updates in-game browser will update automaticly. It's common Windows feauture.
We have some not realistic effects in game - such as avatars collisions, panic linking (everybody have such fast reaction? And were is the 'safety first'?). I think we can enhance and explain this by 'unlocking' the functioning of KI. KI is attached to our hand, it touches our body. Can you remember an imager in the Myst's rocket? We used image of book as good as the book. KI projects some D'ni symbols on it's back which works like a linking panel and bring us to personal age. The situation when the panic linking is needed is determined by AI of KI, which helps all the explorers feel safe. This thing can explain why all D'ni were able to take KI - it allowed them to live longer.
Avatars collisions detection was truncated because of very special situations when somebody lose his connection in the middle of passage. And all the people stay and watch his back not able to pass through. I think it can be solved by adding special feauture to KI. When you lose you connection your KI brings you to the state of 'continued linking' - you are between this place and your Relto, frozen in linking state. People can see your glowing contour, but you are not more rigid body for them. If it is decored with good shader effect it will look pretty. When you restores your connection in some time out you appears back in this place. If not - you are bringed to you Relto. This effect can be used for 'temporary danger' - such as flying rock etc. You become ethereal when rock get close to you, it flies through you and... you are back! When the large rock falls over your head... KI makes you ethereal, waits for danger passed. Place, where you stay, isn't free so you cannot return. KI decides that danger is constant and link you to Relto. If you fall to some deep place KI freezes you in middle air, waits for ground below your feet (at the distance determined by your current falling speed. If you have too high speed any ground cannot help you). If there will not be any ground during time out you are linked. To your Relto, of course.
Somebody can say: 'Well, it will work when someone disconnects. But what to do if one player doesn't let another to get into the room, or kick it to lava etc?' There are all in-game situations. If we have a good guild system we will have the people that are watching for good behavior. It's the life!
Everybody have enjoyed avatars collisions in linking points. KI can project some linking symbols that move you around the point in some borders, help you link to free place. If there is not any free place around the linking point... You just cannt link there! It's in-game situation.