The Middleweight division being really cluttered right now. Anderson Silva has only had one fight in the octagon so I wouldn’t say he deserves a title shot until he beats someone of substance (Horn, Marquardt, Louiseau, Tanner, or Terrell). I'd throw Swick at him and have the upper echelon guys fight each other. Whoever is the most impressive should be the #1 contender.
Swick v Franklin would be fun anyway, those two guys who can really throw.