A club like that for Star Wars isn't really out of the realm of possibility, though. Hasbro is doing the same thing with Transformers and G.I. Joe. If those are hits, maybe a Star Wars one could be in the future.
I suppose Hasbro could always try such a concept by skipping over any and all mass retail figures no matter how scarce and/or popular and offering brand new, exclusive figures that will only be available through their special online club (and, of course, later on through sites like eBay though they wouldn't mention that) and would never see the light of day at retail. That way there'd be no messy and controversial fan's vote for the super popular or hard-to-find retail figure that they'd like to see offered online to the exclusion of others that might actually have a wider fanbase but just didn't get enough votes.
If the figure Hasbro offers in such a club is one you definitely can't get anywhere else until vastly overpriced copies start trickling onto auction sites then they can offer anything
and it'd be successful. SW fans might bitch about a character if they can walk into a Walmart or Toys 'R' Us and find it, but if their only option to complete their collection is the figure Hasbro chose to sell online that particular month then a lot of them will keep their voices down or mouths shut just to get the new figure they need to flesh out their displays.