Conversation in the an unnamed developers office about one month ago transcripted for your viewing pleasure...
Dev 1: Okay that brings us to the attack bonus shards.
Dev 2: Oh yeah. I heard a player in the tangleroot pug I was in the other day say how cool those were. We really should make those cost a lot more.
Dev 1: Tangleroot. Is that the one that people keep on making me confused by using the abbreviation TR in the LFM and I think they are running a true reincarnation only group and I send them a nasty tell about how mean that is to not allow new players into their group?
Dev 2: I don't know. What's a TR? Just got to level seven myself.
Dev 1: Oh yeah forgot you are one of the new devs.
Dev 2: Okay back to that shard.
Dev 1: Yeah, attack bonus. Let me see if there are any items that have that on it normally would be a nice theme to require that.
Devs find loot dev and pull them into conversation...
loot dev: Okay, attack bonus...spectral gloves and epic spectral gloves have that on it.
Dev 1: Those any good?
loot dev: Uh yeah...
Dev 2: Okay any have higher then a +4?
loot dev: Epic spectrals have a +4. Normal ones a +2.
Dev 2: Okay let's require the epic spectrals then.
Dev 1: Sounds good.
loot dev: Uh guys what are you going to require these for?
Dev 1: Attack bonus +4 bound shard in Cannith crafting.
loot dev: Ah that doesn't really sound like a good idea. Those are incredibly hard to get in game.
Dev 1: Hmmm, okay normal spectral gloves it is.
loot dev: Those are pretty valuable as well guys...
Dev 2: That's the idea.
loot dev: Okay then, I think I'm going to get back to some work I have pilling up.