I may live in a cave, thanks for that ad hominem btw. but I am too poor to afford to invest in games that wont be played. But if a mechanic is presented to me i may not be quite as bright as you, but pretty please sir, I'll make the effort. Oh btw, I believe that I shall take your stance on disparagement, bear with me though, I haven't your practice.
Good games have interesting mechanics, fantastic. Lets talk about them. How many separate mechanics make them different. One core mechanic. an interesting roleplay mechanic, something a social mechanic like Gumshoe? I'd rather, and I believe i speak for some of this thread, hear the data and try to understand it, than to take anyone else's word for it.
Oh, and I misspoke, D&D introduced Prestige Classes, which i suppose could be taken as an interesting mechanic in that genre of games.