* More densely packed mobs
- As it stands, mobs are very sparse w/ numbers on the open world. Could certainly benefit from larger packs.
They made them sparse so you don't get situations like in ARR where they all gang up on you and kill you.

* Adjust EXP
- Make it so grinding overworld mobs could be a viable method of leveling. Doesn't have to go overboard to invalidate everything else, but would be nice.
This would make it viable for botters and for people to farm mob packs that people need for quests.

* Allow overworld to spawn NM type enemies, similar to Eureka-esque stuff, for killing mobs.
- incorporate the Duel FATE mechanic for angering certain mob factions. Allow the rewards to be chunks of gil, tomes, misc mats, or Maps with higher success rates.
We have FATEs already but I think it is definitely an idea to incorporate bozja-like features into the open world generally.

There is a good amount of open world content though: Blue Mage, FATEs, Treasure Maps, fighting A ranks with a party, spawning S ranks. Hunting in the open world has kept me busy for months at a time and is really fun.