It's called marketing and it's a formula that Ford has successfully used for decades. They are well aware of the fact that the majority of the Mustangs they will sell are the lowest priced models (this has been the case since the 60's as well), but they increase model exposure and public interest with high powered, high profile limited editions. A potential buyer probably already knows going into the showroom that he/she can't afford a Boss or GT500, but because of the exposure those models produced, and image they create for the Mustang line up as a whole, that potential buyer is willing to plop down their money for a less expensive version just to get a piece of that image and heritage and little taste of the performance the more expensive models offer. The big improvement in recent years is that Ford has been making the less expensive models better performers by leaps and bounds so that once they get that potential buyer in the showroom, the model they actually can afford still delivers some value and real performance so you're more likely to part with your money to buy the car rather than leave the dealership disappointed because the base model couldn't muster up enough performance to hold it's own on the street against 4 cyl ricer sedans. How many Mustangs do you think they would be selling if the base model still performed like the 2.3L LX's of the 80's? Ford IS listening, the 2011 V6 is proof of that, and if you don't really like the particular details of the limited editions they crank out to boost exposure that's fine, you don't have to buy one, and as a limited edition model you also aren't likely to see one on the street every day either. I wouldn't worry too much about the special models collecting dust on the showroom floor either, I seriously doubt Ford will mass produce them beyond market demand, and there's always a number of buyers with the money and interest to scoop up potential collectables. So, relax, enjoy your own Mustang, and be satisfied with the knowledge that the performance gains put into the limited editions today eventually filter down to the lesser models in the future.