Gonzihere, I get where you are coming from. It is fun to have a close race with someone on a par with your own skill. That said, from what I can see (correct me if I'm wrong) is that you want to handicap people that come on lots and can do well because you're a casual gamer. Which, I think will go down like a cup of cold sick. All those people at one point did times that you do but worked on it.
I'm pretty sure people are still signing up to other long term games like World Of Warcraft etc, despite people already being there for some years and having the advantage of experience, epic level mages or whatever it is they have. You also need to be sure that getting good in the "Boring hatchback" enables you to be better when you get onto other cars.
Personally, I go in the Cargame.nl S1 room at the moment because it is multiclass, uses an experience rating system where you can work your way into having other cars. Also has other tracks apart from Blackwood and also layouts/modifications that aren't on the default single player. (especially with Fern Bay)