IRPS get an assistant mod spot and then disappear forever after their term is up. That seems to be SOP these days.
3) It may be a consideration to not allow I.R.P.'s to moderate stock specific boards where they have had or are conducting awareness campaigns purely on the appearance they have a bias towards that stock
"Give 'em the old Razzle Dazzle.....razzle dazzle 'em"