Sure, this poll is not a scientifically perfect, but let's also not split hairs here. I mean, how many registered CivFanatics Users are out there, who do love the Civ Switching Idea, but will not buy the game anyway!?
What ist the big difference between "cautiosly optimistic and will buy the game" and "do not care about the idea in particular and will buy the game"?
Nevertheless, If anyone out there wants to set up a scientifically more accurate poll about this, I will happily participate! I doubt there will be a major different outcome overall, though.
I do care about the idea

Probably the "I still hope they can fix it" option from the poll is closest to my view. But that implies a negative. If the implementation is very bad, it might prevent me from buying the game at launch. But if the implementation is good, then it definitely won't prevent me. I don't know all the civs, all the criteria for switching, all the options you are given, so I have a hard time feeling that it's broken or even needs fixing yet.
But it seems like about 25% of people like the idea and are happy for it, 25% are unhappy with it, and the other 50% are in the middle, somewhere between indifferent, wanting some tweaks, or simply wanting more information.