This is very much how the Bordeaux event is run by Samy Behara.
Not too many regs. just the plea that cars be built to the 'spirit'
This is great for most people, who like myself, Mac and many others enjoy building the cars as much as racing and are not to bothered where they come in the competition.
But there are always people who will want to win at any costs (or in some cases whole nations
) so certain basic rules must be applied.
The easiest of these to enforce are simple dimensional ones, i.e. tyre width and diameter and ground clearance etc.
So why not have these rules in place to avoid disappointments on race day?