How many regulated classes do you need? Blinky was meant for "sportsman" and "novices."
Stock racing 10 years ago meant you raced a handout motor which you tuned. Some were better than others at doing it. Weren't these the good 'ol days?
You keep looking to restrict every aspect of facing we might as well go by Tyco cars from Walmart and race those.
ROAR already has attendance issues. Everyone racing the same esc/motor combo will likely not make it better. In the US we as customers like to have choices. Yes we have the choice to not race the class or the race, but is the message we want to send out?
If you compare racing from over seas then also include facts such as 10.5 is "stock" and in asia for example Mod is the deeper division. There's a reason that Ifmar has no "stock" classes.