I have an idea about a new feature. Gnutella is totally decentralized. The feature superpeers, however makes that some peers are more important than others. My idea is to create a super superpeer that is more stable than a usual superpeer. It could be something close to a server who actually acts like a normal peer, but of course you can get much more info from it. So you could say this group of peers is in contact with this group of peers.