Without addressing most of your points, I think you're (plural if
necessary) overlooking a mode in which many would wish to operate:
generating a new anonymous address for almost every active TCP open
(I say almost because the data connection for an FTP transfer is an
obvious exception) and some class of new UDP sockets.
If you limit addresses to one a day and activate them by deprecating
the public address, I can track anonymous addresses by tricks like
connecting daily to some service which sends an "ident" query back at
me.
Matt
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