It ain't broke IMO, so put the fixit kit away.
It's not like you'd ever be able to verify that a blind poll for a particular month would have turned out any differently than the current polling method would have, anyway.
I don't vote often or participate regularly, but when I do come to this thread, I enjoy reading the
"why you should consider this book" posts. The whinging about a selection method that's no better or no worse than any other?... not nearly as interesting.