Nice job, looks neat. As the others have said, it doesn't look like it'll work that way, but it would be a pretty neat system. I'd hope each job gains more than the select abilities you suggested there in the actual system, though.

Edit: To add, I think when we eventually get Arcanist, it'll probably gain jobs like Scholar (very similar in looks and personality to FFXI's scholar, although nothing similar in abilities, i'd expect SCH in FFXIV to be considerably different), or Sage or something. Or Mathematician! That'd be sweet. Maths mini-games deciding damage and status effects for all!