My thoughts on "A Good Man Goes to War"

Let me start by saying it was a good episode. We got guest characters (The Doctor's Army) that were likable and fun, and if you didn't like them, they didn't do all that much. It followed up on themes that had been visited several times throughout the season. We got the Doctor being Clever, Rory being Badass, Amy didn't do all that much, but you can't have everything. Maybe the Reveal was predictable, but primarily in a meta- "This would make a good plot point" way, rather than an In-Universe way, so that's okay, and besides, they didn't exactly dance around saying "Ooh, you didn't see that coming, didja, look how clever we are".

It was a good episode, or it would have been, except that somebody decided it would be a good idea to give it the tagline "The doctor will rise higher, and then fall farther, than he ever has before". That Tagline describes an entierly different episode, one in which the Doctor, in his desire to protect his friends, crosses a line and does something terrible. Perhaps an episode where the Doctor mistakenly directs his wrath against innocents, or an episode where he does whatever is necessary to Rescue Amy despite dire consequences.
Any of those would have been good Finales, but that's not what we got. Instead we get a perfectly serviceable finale. Apparently, Demons run when a good man goes to war because it means he finally gets out his rolladex and makes a few calls rather than charging in without a plan and trying to fix everything on his own, which, while effective, hardly calls for an ominous poem.