Be careful what you wish for, the soul of Blizzard is long dead.
You can see this with Diablo 4, which is a completely soulless ARPG. With the latest season 3 launched yesterday, it's just not a fun game and it's clear that whatever processes and people they have at Activision Blizzard, they haven't got something in place that lets someone say, "Wait, shouldn't this be fun?".
While D3 had it's fair criticism at launch for a number of reasons, it still at it's core had a fun gameplay loop. With the itemisation fix in Reaper of Souls they managed to turn it around and make a really fun game. Even in the launch state it felt like it was made by people who enjoyed gaming but had made some questionable decisions especially regarding the auction house.
D4 in contrast feels more fundamentally flawed. It feels like a game made by people who have been described what makes a game fun but don't play games themselves.
It's hard to put into words what feels so off about it. You can criticise that a player goes into the same tilesets, kills the same mobs for the same rewards, but at it's core that's true of a lot of ARPGs which are fun.
You can criticise itemisation, but even that doesn't capture what's so off about the game. It just doesn't have the right dopamine releases while playing. There's little to get excited about when loot drops. You might get some "green arrows" but upgrades don't feel impactful. A few up arrows don't change how you play.
When levelling up, your character doesn't really undergo a transformation from a player struggling to kill mobs in one way to clearing screens of mobs in a different way that you've grown and progressed into. You fairly early get your skills and you kill the same mobs in the same way but now the mobs have X,000 hit-points instead of X hit-points.
I might myself get criticised for this post by people saying that fun is subjective, that this is just my opinion. But fun isn't just subjective, there's a core to computer games, and in the latest season the mechanics they added were to take some of the generally agreed least fun parts of competitors and wrap them up in something that doesn't even deliver a large reward for doing it.
Twitch isn't always a reliable metric, but when hardcore ARPG fans are visibly bored and itching to play a different game, that isn't a good look.
Season resets should be an exciting time for a clean start with a new character and exploring new play-styles. Instead, around 10 levels in, everyone realises they've already unlocked all the skills they'll use this season, that they've now essentially experienced most the content they'll see this season.