Yeah -- that's a good point, trap_jaw. It could be used in conjunction with some sort of 'favorites' list, where you can click on a host to remember it, and later do browse-hosts or chats (or other future things) with it. Also the latest dev version remembers hosts that you've connected to (as an outgoing connection, not an incoming -- so it guarantees you could connect to it), and it remembers the port that you connected to, so that could be used to try and 'guess' the port.

But, you're right the Ultrapeers are very overloaded right now. Hopefully with the introduction of GUESS and the increase of intra-ultrapeer connections & associated decrease of TTL will help the load.