I thought it was disappointing. Who fights on stairs like that? And the ragdoll to Qyburn was a joke death, and Cersei just creeping past with no bother. And the Mountain looked utterly ridiculous. The suicide dive would have had more impact emotionally if 1) the Hound knew it was suicide and 2) he knew about the fire pit and actively accepted it as a means to an end. But instead we just got an action scene (like the rest of this season) with no real emotional connection or logical conclusion.