This is one of my areas of interest. Luckily, I have a few projects in the works which I can extend to power up/down the axiom amps and subs. Note: the need to coordinate power down with the triggers to prevent transients. Also one needs get a handle on any shortening of components life (and how to mitigate it).
That said, it's best if Axiom incorporated this thinking into future products (minimizing standby power).
The question is "are you willing to pay for it" ... as the engineering and added complexity costs would need to be spread over the number of units they sell. That may be a significant number ...
