The reality is, as it stands, you can't craft better gear.
You can craft gear with better base stats. But looted gear (as it currently is on PTS) contains set bonuses which have better advantages than the set bonuses available to crafters in the world. And sense most stats have fairly low soft-caps, set bonuses are really the only defining characteristic of end-game gear.
Plus, some of the looted items have unique traits that crafters can NOT learn (no matter if we break down the item or not). Though these don't seem to offer the unique advantages that the set bonuses have.
All I'm asking for on THAT front, is us to be allowed to craft the traits and set bonuses of end game loot in the dungeon or adventure zone that those loot drops are available in.