While you certainly could do better than Kevin Youkilis for your 4th outfielder, no one on your list sticks out as a must have outside of Aubrey Huff. Depsite a few down years, Huff is still capable of a .290, 30, 100 season especially with a move back to the American League. The GNUru also expects big things from Shane Vicotrino. If your lacking in speed, Victrino may be a solid choice. All the others on your list may or may not be worthy of addition- the best you can do is keep your tabs on them and be ready to punce should they blossom.