Hummmm.... Its a tough market... U can get a 1/24 losi SCT or rally for about $100 as a RTR vehicle.
they are 4 wheel drive, working front and rear diffs, ball raced, slipper clutch. And fully adjustable oil filled shocks.
i just thinking the suspension is going to be a issue... Pan car style suspension only really works on perfect surfaces and something this small it would be not be that good on a typical onroad bash spot.
I personally think there might be more of a market for a 1/24 4x4 drift chassis. That u could build ur favourite 1/24 static model onto.
The suspension issues might not matter because most people currently drifting the losi micro rally car tend to run it on extremely smoothe surfaces.. Oh been a drifter u wouldn't nesouraly need a working diff or slipper... Oh oh and because drift cars a generally slow u might not have as many durability issues with the ABS bodies over the slot car lexan bodies...
what ever u do I'm sure it will be very cool