I disabled the Super-HICAS from my 300ZX-TT back in the day. Was cheap, really easy to do and improved the transient response of the car. But, the M employs a new system so I wonder if there is a way to mechanically disable it.
I appreciate the active noise cancellation system in the M. It's interesting that the 3.7V6 is called smooth in the M37, but the same engine is called coarse and obnoxious in the 370Z and G37. Perhaps they should install that noise cancellation in the Z and G too.