They’re both assistants and the majority of assistants (especially at their level) wants a shot at their own program and path. I think either guy is very attainable.
		
		
	 
Best thing for us is.....CBP lets BVG recruit, practice the way he wants, let this young defense mature, get the kinks out of the offense, and keep getting better this year and be real good next year.
And keep doing it. 
But just to be devil's advocate:
The key word here is "majority". I think it's a fact that some people know their limitations. They find something they are GREAT at...and stick to it. They either don't want the administrative hassle, or the backslapping and handshaking that come with the HC job, or maybe they're just smart enough to not get in "over their head". They "do chicken right" (you youngsters need to look that up 

 )
Neither guy you mentioned is getting any younger (Foster is 59), and they've not tried it yet.
I don't know if I want another coordinator SHOULD WE NEED TO MAKE A CHANGE. (Not calling for anybody's head. Yet). Charlie didn't know he had what should have been a Heisman candidate at QB, and we bitched constantly about the offense. Ironically, after 8-9 years as a HEAD coach he has an offense to match his D.
Bobby was an OC who came in to a loaded JLS team and was successful enough to bail on us. He still had no defense at Arkansas. He has NEVER concerned himself with defense. He may never.
I'd like to get a HC who has been successful with O and D. Well rounded. Yes, we tried that and got Krags. 
Ain't nothing dead solid perfect 
