You could always get into crafting.
I"M SERIOUS.

I've got one job at level 32, and my next highest is 20.
I don't really see the big grab at getting all battle classes to 50 anyways before 2.0
one, two, yeah, maybe, but i'd like to save the journey. That's me.

Crafting is a valid use of time if you're planning on staying on through 2.0
Attach your own materia, repair your own stuff, attach and repair other peoples stuff.
Craft all the fine things that people buy for materia and whatever else they eventually do with it,
oh yes, and the gil... Gil buys things.
Gil even bought you a relic weapon in FFXI if you had enough.
I've got 36 Million and counting. *_*