Yah so if iPad 2 had emerged with fewer variations at launch, the threads du jour would have been about Apple not having the sense to make what customers want and how by the time they make it no one will want it and how the launch was therefore "a complete mess."
Apple always just has to pick its poison for a product launch, execute the selected plan as best it can, adapt where proven necessary, and laugh all the way to the bank. I'm sure they learn something useful from every go, and that we consumers benefit from that somehow the next time around.
When iPad 1 launched, the main dissenters were shouting to the rooftops that tablets were a niche product and Apple was nuts to roll it off the assembly line. Yah. So a year later we see that the iPad's "niche" is the size of the Grand Canyon and still evolving. It must be fun for critics to move from dissing the product completely to merely complaining there are too many or not enough variants. Hell, I would have voted for one more set: without or without the damn camera(s), but even Apple seems to lack enough brass to go there in this day and age. A no-cam version probably WOULD be for a niche market.
Apple's competitors are clearly still chasing the wake of iPad 1, trying to make one they can sell. Smaller. Bigger. Purple. Circular. Edible.
Meanwhile Apple's primary designers have left iPad to the follow-on teams and are out in the desert somewhere, studying cracks in the ground and wondering what would happen if they poke a little stick in, oh, say, right about here... they're out there making "a complete mess" day after day after day, brainstorming their way to the next phase when they have to winnow out the chaff from the feasible dreams we don't even know we have yet.
Don't you get it yet? A "complete mess" is proof of life, evolution, progress. Or as they say in the barns around here, "a clean stall is a sign of a dead horse."