Renaming the User and Org hierachies

Hello, given that at least the current prefix for the Org hierarchy is suboptimal, I would like to propose renaming both the User and Org hierarchy to Prs and Vnd, respectively. The rationale behind those names is that they are the ones the IETF/IANA chose for very much the same purpose: to name two registration trees (for MIME types, in this case), Prs and Vnd denoting the "Personal or Vanity" and "Vendor" tree, respectively. See "RFC 2048 - MIME Registration Procedures", sections 2.1.2 and 2.1.3, for a detailed description of the two trees ftp://ftp.rfc-editor.org/in-notes/rfc2048.txt. Does this look like an improvement over User and Org (or Contrib, for that matter)? Regards, Andreas Sewe