[Please see Ben Irving response below]
I'm not sure if my question on stream was perhaps misconstrued, but on the stream Darrin McPherson answered my question about rerolling items by basically saying (paraphrased) "the only way to get different rolls on items is to re-craft them or get them again as a random drop".
This is a HUGE mistake of game design.
I'm not sure if perhaps Darrin thought I meant "can you completely reroll the item and try again for 4 new properties", which is not what I meant; I meant being able to reroll 1 out of the total properties, such as Enchanting in Diablo 3 or Recalibration in The Division. Once you pick one property to reroll, the other ones become locked in forever.
Imagine getting Argo's Fist as a drop (revealed today on the stream). You're excited as hell because it's part of a blast build you're trying to make. You speed through the rest of the mission, eagerly waiting to get the item at t...