There's a looping mechanism in Diablo that's central to the game's success, or not. Do you like the feeling of being dropped into the dungeon to mindlessly hunt down mobs and loot? If so, then Diablo 4 is halfway to becoming a favorite among the community of fans. If the team has once repeatedly abused the loot system like they did in the initial release of Diablo 3, then we're in trouble.
Within the novel Blood, Sweat, and Pixels, the chapter on the disaster that was Diablo 3's launch relates the story of how one Blizzard designer played with the game for literally hundreds of hours, before they discovered a piece of legendary loot. The moment that the orange light appeared from a random adversary, he tried to grab the treasure only to discover that his class could not even get it. The loot system was fundamentally flawed that even the excitement to grind for hours, and then the satisfaction of receiving something unique, was broken.
This was finally fixed to the point where you could only locate specific levels of loot which would fit your class, and the speed at which legendary items were dropped was increased. This meant that even though the legendary items you received were not a problem however, you would sometimes get a little bit of dopamine that kept you in the game.
When Diablo 4 gets that right and features a similar loot system similar to Diablo IV Gold Loot2.0 that was in Diablo 3, then we're already concerned about how much time we'll have to spend playing the game. The Diablo 3 disaster is the best chance that has ever happened to the franchise on a long-term basis, and combine that alongside it's Immortal controversy, it's like Blizzard has a simple roadmap of potholes to avoid to keep it at the top of the list of its best players.
The Diablo community is vocal about what they don't like and has been for the entirety of the course of Diablo 3, so we're hoping Blizzard will take that on board from those fortunate enough to experience large portions of the game prior to release. However, we'd bet Blizzard isn't a fan of the flood of leaked footage that is rumored to have come in the wake of one of these tests.
One aspect in Diablo 3 that is confirmed to return are the time-limited Seasons. They're basically post-game pieces of content which refresh the ways legendary items function and also remix the gameplay of the base game, adding replayability to a game that's already incredibly replayable. Seasons were included in significant amounts duration in Diablo 3, so we're hoping they'll also be a huge focus during Diablo 4.
The seasonal nature of the game also sets Diablo 4 up to be an even more irresistible Game Pass game, should the merger ever end. A game like Diablo that has solid gameplay is the ideal choice to provide a service designed to allow players who want to play live games after a few months. But, with the game set for release in June and the fight for cheap Diablo IV Gold what the future holds for Activision ongoing It's one game that's not likely to get an Game Pass treatment on day one, unless something major is changed.