Should there be a CR modifier for a party that includes a barbarian?

@mikemearls I wonder, should there be a modifier for a party that includes a barbarian? Huge hp and dmg output compared w/other classes. Or maybe that's just OUR barbarian.

— (((Keith Ammann))) (@geeniusatwrok) October 11, 2016

@geeniusatwrok might be your barbarian! Best counter – shut down that rage with a wall of force or similar. #wotcstaff

— (((Mike Mearls))) (@mikemearls) October 15, 2016