More incentive to go and run around in the open world. I really liked how bicolor gemstones got me into doing random Fates, even at max level. Because there was actual incentive to do it besides exp and grand company cash.

I'd love to see more things like that in the open world to get more players to come out of the city hubs and actually explore the zones.

Hamelt Defense and essentially giving out reward points that can be exchanged for rare items and such for maintaining zones from devolving into dangerous hazard zones would make for a nice change to the open world and help it feel more alive.