The gist of what I'm getting from reading these forums is that what people want are the features and specs of the 5D3. They just don't want to pay the >$3K price tag for it.
Yes, and this is a standard complaint heard with every new product introduction. Some people will never
be happy until Canon introduces products with absolutely premium quality and features but with incredibly low bargain prices. They want Leica quality at Tamron prices. They want Lexus quality at Chevy prices. This is exemplified by people who say, in essence, "The 5D3 [in features & quality] is what the 5D2 should have been, and the 5D2 price is what the 5D3 price should have been." Well, that's just not going to happen.
People seem to think that features and prices are all just a clever marketing pulled out of thin air. They forget that it actually costs a great deal to develop and build any decent photo gear, and every extra detail costs a manufacturer something, whether it is engineering resources, testing time, material costs, production time, service costs, etc. If another manufacturer is offering some extra detail at lower cost, you can bet they are cutting costs somewhere else, diminishing their product in some other way. There is no free lunch.
Anyone in business (including many photographers) knows that extra quality, extra features and extra service is always going to cost more. If the 6D is targeted for a lower price point — if it is the "economy full-frame" — then it will necessarily offer some compromises. Some people will find it a good compromise and others won't.