Hello,
I think that a goal would have been to gather "all" the Automattic sites under one account/site. A suggestion would have been to aquire a new domain like wplink.net and every services delivered from Automattic uses that domain to keep track of users.
And also apply the possibility to delete blogs which frees the name, and delete accounts that frees the name and delete all data from that user.
What do you think?
Birger :)