So far I'm not really into it, I think the crafting patterns drop rate on some weapons is a disgrace. I've also got world drops of weapons I'd probably craft that way so what's the point? Maybe moving forward there should be some exclusive perks if they aren't game breaking only available through crafting, I know they'd be hard to balance.
Datto did a good video on the economy and thought it ridiculous that people would fill vault space with red border weapons as if you play the game enough then it wouldn't take long to grind materials. In summary it's an interesting addition that if managed well will be a good addition but if not could easily be ignored.