I am not suggesting people be forced to buy a turbo version which I agree is not as practical as the non-turbo, just that it would be a nice option for those with more cash seeking more fun.
Mazman; Although the the current 2.5 turbo used in other Mazda models only makes full power on higher octane fuel, it is perfectly happy to run on 87 octane and still offer an enormous gain in low end torque over the unboosted engine. Thank goodness, many, like myself do not live in bumper to bumper traffic and would get ample opportunity to feel the extra kick without even having to wind the engine out. The 2.5 unboosted engine makes 186 ft lbs of torque at 4000 RPM, the turbo makes 320ft lbs at 2000 rpm on 87 octane, same with premium. Only the hp rating at high rpm goes up with the more expensive fuel.
Mazda is out of the "Speed" model business, and just as well as far as I am concerned as those models were too rough and crude to suit me.