Well, I thought the point was to vote on the colors that would be HARDEST to build a deck around. With the synergy you're mentioning for B/W, wouldn't that make it easier?
As far as Highlander - I think that is ok... One thing I also suggest is to try to mix old & new - we don't need to recreate the prebuilt boros deck... When I started this, I'd sort of "forgotten" all the new guild decks...
Will follow Oversoul's lead this time, and pick an artifact. Red, and White usually have lower mana costs, therefore I choose Howling Mine, to speed up the game play...