I think the reason I loved this game so much is due to it being what I always thought the series was aiming for. In the very first game, you fight some enemies at the beginning, then spend the next hour or so exploring with Sully. I thought the game was going to be a mixture of this. It wasn't. Once combat starts again, it rarely lets up for the rest of the game. It really frustrated me. Uncharted 2 and 3 were a lot better in this regard, but they still focused too heavily on gunfights.
Uncharted 4, for me, finally got the pacing down right. If you were a huge fan of how the earlier games were set up, I can see why this game would disappoint you. But, for me, this is what I always wanted Uncharted to be, so I'm quite satisfied with how it turned out.
That being said, I really can't enjoy a game of this type very often these days. I've never been huge into "cinematic" games, so while I loved this one, I've had my fill for a looong time and I'm glad ND is ending the series.
After Uncharted, I REALLY need something like DOOM, which arrives in my mailbox tomorrow!