Nobody--or more specifically I would say very few people really give two tinkers damn about the pro-bowl, hence the tv ratings are probably pretty low.
I was going to post this same exact sentiment. The pro-bowl is just beyond dumb. I'm all for selecting an all star-team for each season, but they don't have to play. Turn it into some sort of media/advertisement love fest for the NFL and Hawaii. Make it so the players still benefit from being selected to the "pro-bowl" without the game. Turn it into positive, weekend-long celebration of the NFL, its best players and the fans etc. without the game.