Okay, if I get this right, you want to remove the cross-class limitations of the Jobs and make more of the classes abilities cross-class-able? I have to assume this is what you mean as not once did you say "class", treating the Jobs as the things you level... which they aren't. While I'm all for the idea, it can make for some broken things balance-wise. Take Warrior. Being a TP tank they rely on their TP for maintaining hate, especially with their smaller mp pool compared to Paladin. If they were to have access to lancer's Invigorate then they'd be able to really rip into a mob, probably even outclassing Dragoon in burst damage. What's so bad about that? PvP. Warrior wades into an enemy party, carnage ensues. In the meta, all DDs would be assumed as having leveled archer for Quelling and Repelling Shot and conjurer for Shroud of Saints. I don't see this idea ending well, even if it would be neat.