To me, it would be all the soccer/sports channels in Spanish, ESPN Deportes, Fox Deportes, BeIn En Espanol and GolTv. If these 4 were offered in HD, even though I don't speak Spanish, I'd pay the 15 bucks to add them. That said, 2 of them were originally available in the SportsPak, Fox Deportes and GolTv.
Aside from those sports channels, Directv took care of my # 1 channel request this year: BBC America. I'm happy with Directv adding HD channels that are widely request by others, such as H2, GSN, TVLand, or, CW-HD DNS for Alan Gordon
Rip: Comcast: July 2005 - April 2009 & Dish Network: April 2009-July 2011
Directv since June 2011 and loving it!
Directv wish list:BBC World News, Fox Deportes HD, WatchEspn, FoxSports2Go