Smart loot still sucks.
IF trading exists (and I dont think it really should) then do the Last Epoch thing, where you have different rule sets and ways to target loot, craft etc. based on whether you play Trade or No-Trade Mode.
Then the player can choose to move it toward something similar to smart loot if you want to, by how they choose their loot targeting buffs and what not.
Yeah, Nioh is great, and it is indeed Diablo Souls.
Still, would have liked Diablo™ in Souls too. Nioh is fairly melee weapon focused. It does have some spells, but you arent going to get a full-blown sorcerer or necromancer etc.