I don’t even think it’s a matter of keeping it too casual. Look at the feedback from D3 players, they all think D4 is too difficult and complicated, lol. Using your brain isn’t part of a D3 player’s ethos.
The single most impactful problem, right now, imo, is the lack of an endgame loop. Fundamentally, the first and foremost end game loop should stem from the itemization. Without trading, a portion of that is instantly lost. However, you can recover from that, if everything else in the itemization takes that into account and is 100% perfect, but there are literally no chase items in the game. The 5 or 6 (they want us to believe are chase items) aren’t actually capable of dropping, for one, but the rest of the unique items aren’t even useful and get overshadowed by legendaries.
D2 has 400 unique items. Blizzard would need to multiply their current amount of uniques by 20 times, in order to match that volume, since each character only has access to 20 unique items (currently), everything is class specific, and there is no trading. On top of that, they need to make unique items actually worth using, lol.
I think it’d be extremely difficult to keep people rabidly playing without trading unless the itemization was perfect, but even doing that, trading was one of the addictive qualities that kept people playing D2 for decades.
How/why the current team doesn’t understand this, just shows their ignorance of the genre. They are not ARPG players, therefor, they aren’t ARPG developers.
The second biggest thing that kept people playing D2 for decades was the PVP, and right now, the PVP is complete and utter trash. I spend quite a bit of time on the Fields of Hatred because I’m a PVP addict in every game, but my god, if they’re going to include something in a game they should plan on making it worth playing. I’ve seen an endless stream of threads from new players who are playing an ARPG and/or Diablo game for the first time, and they can’t even comprehend why the PVP was left so underdeveloped.
It was fine for D1 and 2 because of the time period, but for the record, the original team had planned on guild halls and PVP specific game modes in D2. They had also planned on multiple expansions. These are things we would have seen, enjoyed, and been able to reap the benefits from over the course of every game release thereafter.
I definitely think D4 will get much better, but I’m afraid it’ll simply be in the form of gimmicks rather than truly dialing in the core fundamentals that make an ARPG an excellent ARPG. For example, they’ll give us a slew of new unique items every season, but it’ll be like 2-3 per class, and none of them will be usable. Or they’ll “support” pvp by giving us double currency weekends, lol. Or they’ll give us tier 5 with new versions of the current capstone dungeons, and claim that’s a new end game feature.