Originally Posted by Caustic

Bran is pretty consistent in his boringness. Do not expect it to change. Even thought he is relevant from a macro and background standpoint to the story, the few minutes he gets here and there are enough to know what is happening.

As far as Tyrion goes, he is one of the best characters in the books, but even he has to give way a bit to let the rest of the world move forward. Think of it this way, he was always overshadowed by his brother, and berated by his father. He grew when they were both away. Now that his father is back, and brother might be, he will probably have to take a back seat again. But you can't keep a great character down for long.