Levequests and ways to improve the system.
Now I know someone will say this doesn't affect them as they either have all capped, or do not do leves, but like any game content, some enjoy, others don't.
I personally love doing leves as their fast and give adequate XP, however their are a few flaws, namely the amount you earn each 12hours so...
suggestion 1) since leves at the giver are already divided between battle,field and craft, why not have leves do the same, so you earn 3 battle, field, craft every 12hours, that way people won't need to choose between either leveling a craft, gather or battle.
Suggestion 2 will be on next bit, since sadly in iPad and editing a post to have all in isn't that quick.