The problem with multiple choice for the final is that lots of people are voting for everyone except who they want to lose e.g. vote for everyone except Player X. That skews the results.
It hasn't made that much difference so far but that's because people have had their own favourites to focus on. But presumably in the final most people's favourites will be out so I think there will be a lot of tactical voting with a multiple choice poll.
That might be the very thng that separates (or has separated) this voting "tournament" from the typical "Who's Your Favorite Active Player" thread.