Some are, yes, I agree. But others require synergy with a specific skill / build to get the most out of them eg. Cloak of Flame ( to convert physical damage to fire damage ) and play as an Infernalist.
Yea I know some will work well, I'm playing frost and there's a ring that lets you snap on chilled enemies so you don't need to freeze completely, would definitely add a bunch of free damage
I actually have cloak of flame and used it for a long time just cause it seemed tanky, I'd still use it but need the spirit slot
edit: but most of them seem completely useless. Diablo 2 pre-lod uniques were pretty mediocre outside of mages, soj, tarn, frostburns, and maybe a couple others. But LOD uniques were all usefull, even if they were far from BIS. I think I prefer it like that. They should be cool items that are fun to find. Like, Hellslayer Axe. Yea, it's far from great, but if you find it in single-player on a viable character, it's awesome, hits hard, looks cool, most importantly - feels super fun to find. That's how it should be imho, with a smattering of super rare, super good ones
IDK I'm not coming down on the game exactly - but the loot isn't as fun to find as in diablo 2. But we'll see. I found 1k defense armour like 20 minutes ago, it's useless but I didn't know stats went that high, so I'm sure I'm not even seeing any of the potential yet