Been playing this game a lot lately and had a lot of fun but after a while was reminded of why I stopped playing last back in 2016. It's very much a MMO level grind when you get to the high end. Farming components for other components, augments, relics, keys, and other shit is very time consuming for what you get. If you want to farm Legendaries and avoid duplicates, you pretty much have to leave your game open for days/weeks (much greater chance of not getting a duplicate roll when your session hasn't been restarted). Some of the legendaries can drastically alter a build so without them you're much more constrained. Leveling alts with merits and GD Item Assistant was a lot easier, but there's still only so many times you can speed run the story missions.
I just don't think I have a 1000-2000 hour game play in me anymore.
My favorite playthroughs ended up being a Warder (switched his focus a few times, from Physical to Lightning to Vitality, but still never got the Avenger's Crusher). Also, for leveling without great gear, a Conjuror full pet build was pretty amazing and melted things though it was tough to keep my resistances up without gimping my pets.