So far, none or few of the Ultrapeer election/promotion (?) schemes that i've had described to me account for the large number of ultrapeers already on the gnutella network.

Correct me if i'm wrong but, if there were already a large number of (morpheus) ultrapeers on the gnutella network, ... wouldn't that decrease the number of clients that will become ultrapeers? I was under the impression that all clients should prefer being a "leaf", unless they encounter very few Ultrapeers.