I think synergy is the way to go, its easy once you know what your doing and its cheap. I cant imagine another 20 or 50 more lvls of goldsmithing that would be outrageous. I already spent 100's of millions of gil too reach 100, and dont want too spend another 100 mil more. Moreover if they do raise the cap I doubt i can skill 50 more lvls of top tier goldsmithing within a year, it'll probably take adleast 2 years or even more.