Bones: Changes for Changes Sake
Again, I'm not sure I get the rationale for adding a new cast member. The dropping of Goodman for Camille was done, apparently, because "the director of the Jeffersonian would not spend so much time in the Forensic Division". It gives more tension, since Camille doesn't let the Squints get away with murder any more.
But again, contrived. Unneccessary. I like to see my mad geniuses throwing dead chickens into wood chippers. That's part of the fun.
I will admit that it's given some more depth to Booth, which rocks.