It’s really not straight forward the crafting in this game isn’t it… I barely never craft stuff beside some relic what else are you crafting to upgrade your stuff ? everything on my forgemaster list look useless 
Boots are crafted a lot. Some purples and blues need to be crafted. There is Decorated Pauldrons, which can be handy for some builds that don’t really have a should supporting them specifically. Though those would preferably be replaced by a good green.
Many hats from end game item sets are craft-only (I believe). Crafted components are also incredibly important. If you are lucky a blueprint will drop for a belt called Tinker’s Ingenuity. It is absolutely amazing and works in virtually any build, an incredible defensive belt. I use it on all of my characters at some point, and for some of them IMO its BiS(best in slot).
There are a few little gems like Tinker’s, some are medals, etc. I think crafting is quietly one of the best parts of the game. Should also pay attention to the different buffs different blacksmiths add to your gear.
I often craft faction belts, and Royal Jelly Essence and occasionally resistance ointments. I use random crafting to upgrade an outdated item while leveling.
Sometimes I remember to craft some of the other green or blue blueprints.
Yes but he look like that we can’t craft anything unless you got the blueprint that really narrow down a lot the option for crafting isn’t it?
there are some blueprints the smith already knows, the rest has to drop in order fro you to be able to have it crafted - just like you cannot equip items that did not drop for you…