I remember this proposal about 1 or 2 years ago...
But from what the moderators said; guys refused to move (very few posted or read anything from the weblog) - preferring the quick email posts.
I dont know how you can make guys move.... except by mabbe spamming the mail list with links to the new weblog until everyone finally clicks out of curiosity.
Human psychology prefers what they are used to; Inertia, resistance of change - probably why Facebook is still more popular than the Buzz.