In the pre-season, I played a storm druid on Eternal. Ran through the campaign, pushed into tier 4, did some world bosses, unlocked all the altars and the entire map, hit level 73 before I realized I just wasn't having fun with the game because the late game/end game is non-existent. It's just a leveling slog with lousy itemization and poor drop rates. I was spending entire sessions where I wouldn't see a single upgrade or sidegrade. So put the game down waiting to play a different class in Season 1.
I was planning on playing a Sorcerer in S1, but then the patch came along and ruined that plan, so I rolled a Necro. Being the silly idiot I am, I didn't skip the campaign even though I could have. I figured it was extra XP and by the time I finished it I had managed to reach chapter 4 of the seasonal campaign and level 40 of the battle pass (then used my ultimate edition unlock and jumped to 60). I've done about a dozen Malignant Tunnels and, is it just me, or are they all the same goddamn map? Sure feels like it. Nothing about the Malignant story line has really made me want to keep playing and knowing that I'm going to hit the late 60s/early 70s and reach the same point I did with my Druid has already made me hit the burnout wall. I really don't want to spend hours upon hours upon hours grinding where I'm dismantling 99.9% of the drops I get.
I don't know if I can say I'm "disappointed" in the game because I've managed to play through the campaign twice now but I can say that fatigue has already set in much faster than it did with D2 or even early D3. At least in D3, despite all its foibles, I wanted to play all the classes. In D4, I can't say I even give a damn about playing Rogue or Barb. I still want to play Sorc one day, if it's ever buffed to being not complete shit.
I feel like D4 is in a weird place between D2 and D3. If I want to be challenged, I'll pop in D2R. If I want to run around and stomp endless amounts of demons feeling like an overpowered god, I'll pop in D3. D4 seems to sit in between those two. I don't really feel challenged by D4, I feel like it's designed entirely to waste my time with a bunch of slog mechanics designed to slow me down -- and in the late game, thanks to scaling, lousy drops, and poor itemization, I never really feel like I'm getting stronger.
Think I'm gonna put it on the shelf again and maybe will come back if the 1.1.1 patch actually makes Sorc worth playing. If so, I'll just putz around to get the last 30 levels of my battle pass and then likely not come back until the first major expansion. Too many games coming out this fall/winter that I'd rather play than return to the same tired dungeons, side quests, cellars, and whatnot for a second season.