Blue mage was never going to work as a main job, not without fundamentally betraying what that job is about, which is learning abilities from monsters. This sounds like something fun to do while we wait for the expansion. This is at least something different outside of the expected content in a patch, The way they announced it could have been better, it should have been made clear from the start this was not a normal job, but I don't have a problem with the content itself.