Personally i think the current system has worked well. Yes i do find it frustrating to be denied the chance to race my favoured cars but at least it meant i got to try out other cool machinery from that era and found to my delight i really enjoyed driving some of them.
Going on my own races, i would have had several potential top 10 finishes if not fallen off or knocked off at different points in a race, and that is normally where i finish...top 10, so would conclude from that, that the cars i was able to drive were the right pace to suit the field. If i ever finish in the top 6 then i count that as a great result and it always gives me something to aim for and challenge the faster guns.
If you all analyse your races, how many of you would say you were unfairly penalised or prevented from running/finishing in your normal expected positions range ? I bet if anything, the only people who noticed changes to their results were some of the lower grid end finishes who were able to have their chances of glory increased and therefore enjoy their racing that bit more, and good for them
whereas fast guys put in slower cars probably had plenty of racing and overtaking to achieve their normal lofty heights instead of zooming off in a 2-3 horse race.
We could always throw in some free-for-all car choices every, say, 4 or 5 races so that everyone can take their favourite machinery into action. That would work well and hopefully cater for everybody throughout a clubmens season.