I'm seeing lots of great ideas! I like that people want to see more balance among the different exp methods, and I agree with making certain quests repeatable once you change classes.
I'd also like to see a boost for the Hunt Log. All the tools are there to make this really fun. It just needs a little extra push. There are chain bonuses for killing mobs in succession, but its hardly worth it to keep going if you've completed that mob on your Hunt Log. They should increase the number of mobs you need to complete that Log entry and boost a mob's base exp. Killing a mob right now is pittance. But making it a little more worthwhile and keeping the chain going before your bonus from the Log kicks in would really make this a nice thing to do.
Then you can stop doing that at any point to go do a FATE when it pops up nearby, or take a break and go do some quests and leves, ect.