This ought to follow through to character builds. A more diverse skill tree could enable players to have different choices about the best way to play heroes, and being able to create characters which
Diablo Immortal Gold work nicely as a group in different manners could potentially add more longevity.
Although the stuttering beginning to Diablo 3's lifetime in the wild might have been forgotten about (aside from those who still get chills at the mere mention of Error 37), it's reasonable to say that the limited selections available upon launch wouldn't fly now.
Something which will be asked for Diablo 4 is play, should the title launch at the same time for consoles and PC. Allowing players to team up across different devices has been one of the key improvements that gaming has seen in the past several decades, no more forcing groups of friends to need to have the exact same system to still play together. If Nintendo and Microsoft can workout Minecraft cross play, then surely Blizzard can perform similar.
It's not modern progress that could make Diablo 4 a bastion of availability, either. Diablo 4 should withstand the temptation of always-online, for instance, to maintain a flexibility for people who'd like offline play. Letting players choose how they would like to play can go a very long way to get Blizzard.
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