The eternal discussion has been reincarnated!
Beginner's class attacked by experienced racers... It is just like in the Matrix, should be the fourth or the fifth iteration...
Creating a category full of limitations is not how you create a beginners class... You cannot user the car out of the box, having a 100$ radio and a 20$ servo will never be the same as racing with high-end Sanwa material... And I'm not debating about the batteries...
A good beginner class must be transparent. It means that it should be "sponsored" by experimented drivers willing to share their knowledge, the setups, the tips and tricks, the tracks, etc. Then you can chose a plateforme with reasonable configurations...
The rest is about teaching people to be reasonable and you're good to go.
You cannot park beginners in a category hoping for them to never progress... It is way too limitating, and boring.