And has. This year (abnormal record of Rams and Packers aside): [www.yardbarker.com]

And in the past with, say, Sean Payton. Coughlin used to call defensive plays with the Giants I believe. Everyone loves Shanahan and he calls his own plays yet has a solid overall team performance

It did work the last 5 years for us, but maybe a change would be good. Have to have an OC as good as Sean though. Like minded.