Jim Drago, well said and I concur.
Everyone has different goals and perspectives here, which is somewhat amazing in its own right... supporting the large basis of the class. It is not all "aspiring pros", or budget weekend guys, or those in between... but SM serves all the above.
My perspective...
As a former SM car owner, now arrive and drive guy who will buy another racecar at some point, my priorities are to race and invest where the most competition exists for my budget. It is my opinion that far and away spec miata offers the highest level of compeition per dollar and further, that competition has grown stronger and closer in equality in recent years. I have a lot of friends running Porsches, and I would LOVE to justify going back to PCA... but there is little justification other than ego. More of my PCA buddies come to SM than vice versa, some run both.
Thinking about succession is prudent, and a fun topic over beers. Guys like to stoke the fire, inferring that Mazda won't support an older class, etc... but I have yet to see any empirical evidence to support this notion. I have confidence that the CRB and guys with a lot more invested (Danny, Jim, Dave, etc) will blow the whistle should Mazda want to put the brakes on the support and enthusiasm for the class as it sits today. Whenever I read one of the "sky is falling" posts I simply give thought to the motivation behind the post.
In my opinion, there is not a strong correlation between newbie racers coming to a class because they like the aesthetics of a car. I would guess that newbies are drawn to the class because of the competition and cost. True racers don't give a crap about the marquee (or atleast it is not the first priority), the car is simply an applicance to go win.
The perception that the class may continue to evolve with different "car of the year" keeps guys like Vic and myself from making long term investment, which may not be the best.
Keep the class as stable and transparent as possible, and it will continue to thrive.