After finishing 3 I see it like your third trip to Europe. You see new stuff and have a great time, but it really is just visiting yet another church or castle.
So "best" souls yet in my opinion, but doesn't quite match the highs of 1. Luckily it doesn't have the lows.
+ great regular enemy design
+ performance was relatively solid
+ no really crap areas
+ the first boss fight is incredibly well placed. It helped me out of bloodborne mode.
- the regular game was hard enough but bosses were way too easy. I did feel 2 went too far in encouraging coop, but 3 went too far the other way
- it only took me 30 hours to see it all, but the game is still too long. I'd like to see them drop a few areas in favour of elevating others.
- the menu/inventory system is somehow much worse in this game.
- no real surprises
I'd play the dlc and dark souls 4, but the series is starting to push it. I know to attack chests, I know to check under elevators or attack walls. They really need to go further next time.
But as far as making a by the numbers souls game? They absolutely nailed it and that is still a great thing.