My only reply to that is reading the rule book if any event is run/held under MSNZ Appendix 6 then cars running need to have a COD ie be classified as Schedule K, T&C, CR etc. If a meeting he held under Appendix A then it is a clubman type event and then anything goes it is clubmans racing as I once heard from a HRC member. However girds sometime also have a set of rules to run under - ie BMW etc to have good safe grids without large speed differential.
I like handicap racing - it is a leveller, fun and if all respect each cars and ability then everyone finishes after all we are talking about cars that finding parts/panels are becoming harder and harder and more costly. There is no reset like on a Playstation and all is damage is gone.
I do agree with the KISS approach - and if you look at T&C it is a very KISS set of rules - it is clear so I don't see how there are so many "hot rods" racing. The issue we see with T&C today is with existing cars - that have been modified outside of the rules as they are today ie not trying to pick on a bubble flared escorts but that is just not a standard production body - not matter what rule book you read - yes homologated under some FIA group but that does not mean it fits T&C
It would be like if I built a Datsun 240z to full Group 4 Spec with all the Group 4 body work - here is a picture then try and run that under T&C = epic fail it is not standard production body work. However the next picture is a standard Datsun 240z well in this case a Fairlady 240zg which was used to homologate the longer nose and flares in Group4 -so the top pic = not T&C but the bottom is as that is the standard production body work.
1975/76 Le Mann Datsun 260Z - period race car aka K car
1972 Fairlady 240ZG - production car