Here is what I think...
Tamiya top drivers all use the 511. Guess Tamiya listen to them. My belief is the only logic thing to do is a re-release of the 511 but with some new parts here and there like (maybe) some sort of new BB shocks and an included diffcover front and back. Could also appreciate the slipperaxle facing the other way next to the motor. Creating more space for electronics. Perhaps a new design chassi where slots are taken out and some more options included in the kit from starters. Calling it the TRF511 LM Edition
.
I am in between cars right now and i am not in a hurry to buy a new one soon so I wait. Can wait all winter if I have to. Really want a 511 instead of 502. Dont miss understand me. Like 502 but love 511.
Really dont care for a SC so no comment on that matter.
Logic thing to do again is to make a mid motor car branded Tamiya so the factory drivers can represent their company with 100% Tamiya parts.