I'm torn, some of those links give me an impression it is more like Mastery books. On The other hand, the idea that you might get a new action, or rait, the HELPS with certain crafts, but doesn't limit you from RECIPES, sounds very exciting, which enables you to be an omni crafter, but makes it much mroe profitable to craft with a group/FC.

oooh, like specializing reduces the amount of materials that go into a Synth. Since you are a specialist, you know how to se every last piece of material provided. and turn less into scraps. That could be exciting!