I feel like I've been spamming this board, sorry, but I found this at gamefaqs, and I think it's pretty damn sweet. It shows that FFXII isn't necessarily a cakewalk, just that it can be if you take advantage of all the freedom to overpower your characters that the license board system allows. I may try a story campaign playthrough using a few of the classes this guy outlines.
Gamefaqs apprently doesn't allow direct links, but just look for the Enforced Class System Challenge FAQ over there.
XI Wiki

