Alright, this would mean that aside of the bugzilla karma, wiki karma, git karma and whatnot karma you would have a pure "community karma" based on votes received from your peers.

Looks like something in the lines of http://drupal.org/project/user_karma

Again, that would be another interesting and concrete metric: community appreciation.

What I still don't see at all is the usefulness of an absolute karma value targeted, explicitely or not, to get new devices in special conditions.