I think 'they' should ban sunglasses from poker events. It makes something that's already quite boring to watch even more boring.
I completely disagree for two reasons.
1. Poker is not really a big spectator sport and the rules shouldn't be changed to simply make it more enjoyable for an audience. They already to plenty by only showing the "big hands" which are usually situations that are out of players' control where both of them get big hands they can't get away from, which coincidentally can be boring from the view of an experienced player. It gets better as the number of players in a tournament dwindles down, but it's not as exciting when all you see are all or nothing hands.
2. If you really know how to play, you can still find great enjoyment from watching even you couldn't see the players at all. Unless someone is awful with their tells, it's all about reading past play styles and bet progressions and patterns. Those are the main factors that tell a story about what they have in their hand. Trying to solve the mystery of how much of that story is truth is the fun of it all.