It's one of these things where Diablo 3 found a solution (taken from WoW)
Items (White,Blue,Yellow) have tons of suffix, prefix, and modifiers and normal stats based on their iLVL
Uniques/Sets (Orange/Green) have specific ones, that have boosted stats depending on iLVL and unique skills or effects.
The only way such a system works is if itemization is properly implemented though. Meaning that most items that drop for a character he/she can also use. And there is SOME chance they are better than what the char has.
This requires many many many different unique skill effects that items can grant.. D3 has well beyond 200.
In D:OS; Itemization is basically just +1-3 stats +1-3 talents and 5 or 10 unique items afaik ,)
What I am saying is this, random loot doesn't add anything to the game in this case. Because the chance is very high you get mismatching +1-3 talent rolls and weird +1-3 stat rolls (+INT +STR +Loremaster for example... on a bow)
I am not saying D:OS needs random loot alá D3, I am saying that like Linio, to me the game lost a lot of it's draw when I learned that "looting everything" is guaranteed to give me better equipment than killing a single enemy. Because I get more rolls on Items, and thus nearly always better items than what unique dropped from a boss.
The only unique I ever even used in D:OS was that unique legendary bow. And not because it had great rolls, but because it's the only decent bow in the game...
