Agree with this.
ND had done a remarkable job of rewarding exploration in TLoU by associating it with the scarcity of supplies. Ammo, parts, melee weapons, weapon upgrade desks were practically littered everywhere, and you were rewarded for going out of your way to check out abandoned buildings etc. Heck, even the stories you find in the notes were far more interesting than UC4's historical journal entries. Though, I put that down to TLoU's world being far more fascinating than that of Uncharted.
Plus, you could upgrade Joel's skills. There's none of that here, which was also disappointing to me.
Also, did anyone else feel like the rope mechanic was a little underutilized in the single-player? It's integrated wonderfully into the multiplayer, and the maps are designed around it. You can literally use it almost anywhere on the map, and it really adds to the verticality and keeps things unpredictable. Meanwhile, in the single-player, it's not quite as useful in combat, as there aren't many places to latch the hook onto in the sandbox arenas.
Honestly, I really like TLoU's multiplayer as well and play it to this day, and I totally understand what you mean when you say that you prefer slower, tactical gameplay. But I disagree about UC4's multiplayer being just another run and gun experience. It's fast-paced for sure, but it's still tactical and borrows several aspects from TLoU's multiplayer. You still have to work cohesively as a team imo.
Though, the AI assistants do make things a little chaotic at times. I hope ND introduces playlists that have them disabled. On the other hand, the mysticals are cool and they work like the Supers in Overwatch, though some of them are overpowered and hopefully that'll get fixed via a future patch.