Temporal Binding

This is pretty useless imo. I went to PTR, waited until I got the dust trader and tried this. You only get 2 fractured each time essentially wasting luminous shards. I'd say stick with daily temporal and then enchanting building for shards.

I have 700 enchanting and this is giving me 2x fractured and not a full temporal crystal like the daily.

This might actually be the most underestimated enchanment in game. Because for some strange reason it stays red all the way trough 1-100 legion enchanting allowing you to max out your enchanting for next to nothing. This effect becomes especially noteworthy once you reach close to a 100 and the mats costs to level up becomes daunting.

I don't know if this has always been the case or if it came with the BfA Pre-Expansion Patch 8.0.1 which changed enchanting from 0-800 to
300/300 - Classic
75/75 - Outland
75/75 - Northrend
75/75 - Cataclysm
75/75 - Pandaren
100/100 - Draenor
100/100 - Legion