Yeah, and a couple of other things come to mind for feeble reasons that GM won't crank out the good stuff:
1. Liability
2. The Lingenfelter cars, etc, even when tested by C&D had to be MUCH more expensive in order to have significant advantages over the Z06. Some of the competitor's cars in the issue were tens of thousands of dollars more expensive than the vettes, but only marginally faster.
3. Longevity: I hear the cylinder walls in the new SB 427 are paper thin. Combine that with high compression, turbo/supercharger, and presumably a different cooling system and I'm not sure how long the engine is going to last. Certainly not as long as the current 350.
4. Least importantly (and to me, not at all important): fuel efficiency.
The majority of these, as I said, are feeble reasons not to make an explosive vette in my mind. One of the problems is they're trying to make a specialty car for the masses, and the masses, on so many levels, love the current car. You and I are in complete agreement, however, and I really do wish they'd make it an RPO. Charge $25,000 for the option if they want to. Make it a principle thing to shred the competition.
Oh, well.