When D2R Items gets that right and implements a similar system as Loot2.0 from Diablo 3, then we're already worried about just how long we'll be able to invest in the game. Diablo 3's disaster is arguably the most beneficial thing that could have happened to the franchise on a go-forward basis. And when you add that and it's Immortal controversy, it appears like Blizzard has a simple strategy for avoiding potholes for it to stay in the good books of it's best players.
The community is extremely vocal about what it doesn't like and has been through the entire life of Diablo 3, so we're hoping Blizzard will take that on board from those who have the privilege of playing large portions of the game before its release. But we'd also bet Blizzard doesn't like the stream of leaked footage that is rumored to have come following one of these private tests.
One aspect that is part of Diablo 3 that is confirmed that it will be returning is the limited-time Seasons. They are basically post-game pieces of content that alter the way legendary items work and remix the contents of the base game which adds replayability to a game that's already replayable. Seasons was supported for quite a long period duration in Diablo 3, so we're hoping they'll be prominent in Diablo 4.
This seasonal trend adds Diablo 4 up to be another compelling Game Pass game, should the merger eventually close. A game like Diablo featuring solid gameplay is perfect for a service specifically designed to allow players who want to play online games following a couple of months. However it's a bit of a gamble, as the game is scheduled to buy diablo II resurrected items be released in June and the war for what the future holds for Activision still well underway it's one of the games which is unlikely to receive Game Pass treatment on day one. Game Pass treatment on day one, unless a major event occurs.