I beat the game today at 88 hours. I think I still had roughly 10-15% undiscovered stuff on the map. IMO it's a 10/10 and might be my favorite game of all time. I may need to let that opinion marinate for awhile, but right now it feels that way.
If there was only one major complaint I have about the game, is that late game difficulty for bosses gets ramped up to such an crazy degree, that the "Play whatever build you want" approach is no longer viable. You might feel forced into respecing and changing your build into something you never would've used, but you are now because it's giving you an actual fighting chance against the bosses, or allowing you to cheese them.