Love that they addressed Diane Simmons' departure right off the bat.
Tom Tucker: Ollie, where is Diane? Ollie: SHE DEAD!
I was SO ready to tear this episode's concept a new one by pointing out the Fred Savage revelation from a few seasons ago, but Chris beat me to it. Of course, inconsistencies aren't needed to tear this plot to pieces. These days, anytime they try and center around the political side of Brian, it's almost a guaranteed recipe for suck.
Liked a couple of things from the episode, like the Stan Smith cameo, the Brady Bunch gag, and Stewie picking "Sons of Tucson" ("Let's all sit for a moment and remember that THIS was a thing!"). Other than that, it's another dud.
"Playing guitars. It's hard to sing while playing...guitars."
I usually defend Family Guy, but this was weak. It might be the fact that I am not a fan of Rush, but I do respect him coming on the show where they did trash the GOP. That being said, it wasn't very good. Brian really only works as a foil character and he is getting Meg level of badness with his stand alone episodes. Family Guy needs to add a little political here and there instead devoting episodes to it.
I think you are wrong about Jennifer Aniston. Watch Friends With Money or The Good Girl sometime. I think she even did a fine job in Picture Perfect for what it was. This was a great movie, and its worth seeing for the supporting cast alone.