Poll is too limited.
What about optional DX11? (For those still on DX9) That'd give a better representation of those who want it alongside those who can't use it.
DX11 is backwards compatible. Graphics on PCs are always scalable. I thought people knew that.
Poll is not limited at all. It gives you the kind of harsch truth so far on one side (console port, which it actually pretty much would be), and the hopefullness on the other side.