It feels good
As the game currently stands, old dungeons via timewalking and chromie time feels good. Since the number squish bosses need to be done with tactics and mobs with dangerous abilities, feel dangerous. And they don't get steam-rolled either.
This is all from a leveling perspective thus far and doesn't include the current expansion's dungeons, just because I haven't done any recently.
The outdoor areas have also put on some muscle. Nowhere near classic level, but a long way from Remix easy.
I really hope this was intentional and that the balance will continue to improve with the coming expansion.