Batman: Knightfall Vol 3 - Knightsend, after the epic Vol 1 and 2, feels like a huge missed opportunity.
The pacing throughout the Knightfall series is excellent and the beginning of Knightsend is no exception. We see Bruce Wayne ascending to his peak, in tandem with Jean Paul Valley (aka Azareal) descending further into madness. When the immovable object and the irresistible force meet, the opening skirmishes are enthralling and lead to a showdown in the Batcave.
It is in the Batcave, for me, where the wheels come off. The epic final battle is missing. Really, we need a moment that reverses Bruce Wayne's battering at the hands of Bane. Then when Bruce Wayne emerges victorious (as expected), his first decision back as Batman is puzzling. He hands the cape and cowl to Dick Grayson!?!
So the back end of Vol 3 is about Dick Grayson's first forays as Batman. They're good tales, especially when he takes on Two-Face. However, this' meant to be Bruce Wayne's rebirth as Batman. So it'd be much better suited to see tales of Bruce re-asserting himself against the likes of the Joker and repairing his relationships with the likes of Commissioner Gordon and Catwoman.