I agree with Jim on the futility of trying to further level the field. We already have NOV, TIR and PRO in an attempt to make more people feel good and have a competitive class to run. At the end of the day, the better drivers with the better cars and tires are still going to win. Period.
We can add more classes to make it more "fair". Then you'll have 2-3 people per class. Like DM - few people is much less fun - trust me. One or two trophies and the best driver and car will probably still win it every time. And you'll occasionally get bumped in with tougher classes.
We can adjust TIR and PRO to have a different scoring. But then you really need to adjust all the other classes to score the same. A .001 loss is no different or more painful in TIR or PRO than it is in CS. Just because a class has 25 drivers doesn't mean that the mid-pack guy who gets 10th is a superior driver - could be the last 15 weren't very good (speaking generically - not this particular group of drivers, of course

). Same with a class with 5 drivers. Yeah the 5th driver may not be good and still gets 5th place points - BUT maybe he is hugely competitive and would still have been 5th if there were 25 drivers in the class. A scoring system cannot adjust for the mix of drivers in a class that changes over time. IMHO, an imperfect but CONSISTENT scoring system is better than having one-off systems that fit particular classes.
You may ask why I give a rat's rear about all this since I over in the mod world?

I'm hoping next year I will be somewhere in open stock class. From my current (outside) perspective, it's not as broken as it must look from within. Most classes have enough people so you can actually compete in your own class not only at each event, but across the whole season. You actually have reasonable enough paxes that you can put your car in TIR if you don't want to spend much money, in open class if you want to spend more money and use tires, and the PRO class if you want to spend even more money and are talented. And, in most of the classes you could even prep your car to the limit and still not be required to trailer it to the event!
My advice is to leave it as is - no system is perfect, but at least you have multiple options open to you and it's clear what you need to do if you want to finish higher in your class.
My $.02 worth...