Running, just like passing is an art form. Running more for the simple fat of running more won't make us successful. It is calling the proper run against the D. Running off tackle into Bama's DL won't work. Calling running plays that will make them "pay" for "running down hill" is a better idea i.e. counters, read option (option variants) etc... Running plays might be called "less", but would be more successful.
IMO, Langs simply calls running plays to call running plays. Not really ones with a high probability of success i.e. Cross outside, Newby inside etc..... Just like really looking at what TA can do in the passing game needs to be done in the running game. Examine your backs (not every back is a bruiser, speed guy, shifty etc) Call plays to their strengths. Try and define what type of running game we want. Option, spread, power, power from spread sets (Houston), inverted veer (OSU), 2 back etc..... Get this figured out and recruit for it. More of this or more of that doesn't matter if we fail to execute or continue to pound the square peg into the round hole......