i was thinking about this a lot too. sometimes i think “wow that mobs hammer looks awesome” (no pun intended)
but instead they drop a shield.
while i do not really want 100% predictable drops, it might be cool to have a enemy specific loot pool, similar to boss loot which probably works with a loot pool as well.
so for example give those shield mobs a few shields they can drop with random affixes, some swords and some armor pieces, and give the firebomb mages more bombs and bufs/consumables to drop, and the 2 hand guys no shields, but more 2 handers to drop.
get what i mean? that would make some sort of targeting farming possible, while still keeping drops fairly random within their pool and affixes.