You know me too well :)
Plastic is an widely mistaken thing about the Corvette. There is actually hardly any on it at all. But the materials themselves, while being better than plastic, are not very good, and there is no excuse for it. Just look at the interiors of GM's new products. The Buick Lacrosse, Cadillac CTS, Cadillac SRX, and even the Chevrolet Cruze have better interior quality than the Corvette, and all of them cost less. There is something wrong with that picture.
With a better interior, the Corvette would be a complete car. But as of now, it always seems as though it is missing something. A company called Carvaggio do AMAZING things with a Corvette interior. Send them any Corvette and they can set you up right. They put in proper seats, and cover everything in quality leather, from head to toe. It should leave that way from the factory though. You shouldn't have to spend 44-120k on a sports car, then go spend another 5-6k on interior upgrades.
Right now, I can think of nothing that really gives you more bang for your buck than the Corvette (or 2011 Ford Mustang). Both are very great for what they cost.
On a side note: I would really appreciate it if Chevrolet would release, at the very least, plans for the C7 Corvette before we are all dead and gone lol.