The game’s a total meme mess.
A new crafting system appeared already before 4.0.
D4 needs simple rules and advanced gameplay when the player desires it, but this should not be mandatory to enjoy the game in all of its gameplay aspects.
The aRPG genre as a whole needs to draw players from other genres to it and a simple to learn itemization together with great combat and good enough build diversity is the solution here. Once these are in place more items and content could be added without these leading to power creep. Sounds simple, right? Yet no one has done it.