I know there are quite some questions around about this topic,
but still I'd like to say something about it.  IMO, the logical
way of editing should be something like:    • novice user - no
editing rights   • advanced user - can edit (needs approval),
can approve edits with 2 approvals needed, ties in approval need
to be solved by 3rd user *   • expert user - can instant-edit,
can instant-approve (no second person needed), approval on edits
which already have 1 approval (from an advanced user) does have
more weight, thus no ties will occur *  * approval meaning
either approve/reject in this context  Also it would be nice to
make it dependent on the experience of the user (having badge in
at least one of the tags/having editor badges) rather than
depending solely on Reputation.  Maybe this is against the
simplicity-rule of SO, but the system as it is atm is not very
convincing.  edit in Reply to Wladimirs comment:  at the moment,
the point that bothers me most is having instant-edit rights but
to approve a pos