@Shurrikhan

It wouldn't impede new jobs that use the same weapons. Again to refer to Final Fantasy XI. The point is as the game evolves and gains more mechanics is nearly impossible to not have a complementary kit for it. And no one is saying how far it'd change the job. Completely revamping a job would be pointless, but giving them options to expand upon their existing kit is the concept. I myself have come up with ideas how how these changes would be implemented (that I didn't list because that's going way to far) and I'd like to assume a full team of developers could do even better. Ha-ha. But I do see where you are coming from. This is more so a way to combat skill bloat on hotbars, add more unique play styles to existing jobs, more utility, and also means that if they were struggling to figure out new jobs. An expansion could instead expand upon existing resources entirely. Rather than making things from nothing.