I disagree. It's one of the few "trademark" things doubles has going for it. And tennis needs it. And needs Mike and Bob, in my view. They are the best current ambassadors for doubles out there -- because they are enthusiastic, they are entertaining (I agree with that assessment), and they are American, so it's something to get Americans excited about the ATP and doubles.
I find it ironic that when all the doubles changes were taking place last year, people here were fighting that, saying you can't eliminate doubles. So the ATP is working on promoting it more, and Bob and Mike, as the No. 1 team, are a big part of that promotion, as they should be.
But taking away the things that are most interesting about them would undermine that, IMO. They are entertainers, they speak well when they are interviewed (which is rare except for Davis Cup), and they love being on the Tour and being out there competing. They not be the best doubles team ever (doubt they will ever surpass the Woodies), but they do have some major titles; they are a staple on the US Davis Cup team (which they will win one year when we get the right draw); and they aren't boring.
It's not as if you guys have to watch them all the time on TV -- they are never shown unless it's Davis Cup. Reading some of the comments above, I think the complaint is more against doubles than against the Bryans.
At IW, I had chances to watch singles players at times, but chose the Bryans. They are fun to watch. And for many people going to tournaments, that is enough.