They already have those classes, S/C(8.90), S/G(9.90), S/ST(10.90). They have been around for a number of years. I dont see why those who wants heads up index racing dont try what is already out there.
BTW there is no rule that states you have to use a throttle stop or delay box. A good racer is a good racer period.
"I am not ashamed to confess I am ignorant of what I do not know."