It might just be me misremember my previous playthroughs, but I feel like in Patch 4 I saw more 5th level + mechanics "implemented" in enemy NPCs. Might be a sign they are slowly making their ways towards it.

For example, in a fight against a particular zealous group who asks you to help hunt a lone escapee, I noticed that their leader used Extra Attack on me.

We've seen multi-attacks on monsters, but it's the first time I remember seeing a character with player classes use that on me. It might just be me previously not experiencing that before, but thought I'd share to see if anyone else noticed.