"* Take v0.6 handshaking and leave the 3rd step away (see [1]). (Revised, see rev 1 posting below)
* Replace GIV with a real HTTP style PUT/POST header
* Document GUID tagging
* Rename Ultrapeers back to 'Superpeers' or 'Superservants'
* Use ISO Latin 1 character set (ISO 8859-1) in search queries/queryhits/HTTP filenames.
* Think about an Unicode addon, for world wide file trade (including Asia)! "

The problem with this is that it's not very backward compatable. Trust me there have been hundreds of these type of proposals, none have made it.

The reason 0.6 made it was the it was backward combatible. It only involved the hadn shaking mechanism, so a servent could have both 0.6 and 0.4 connections.