- hamlet defense and provisioning
- chocobo caravan escorts
- being able to turn fish into crystals/shards
- being able to break down clusters into crystals or crystals into shards
- shards/crystals/clusters dropping from mobs
- being able to Bloodbath -> Steel Cyclone a big group of mobs and fully heal myself on WAR
- some of the old character animations
- doing emotes with weapons unsheathed
- open-world dungeons
- having to fight your way through the beastmen camps, and the NM's at the end
- DRG jump moves actually evading attacks
- not having to use 9 cokes, peacock ore, etc. to make high-end crafting items, and not having to spam dungeon runs to get them in the first place
- fighting/chasing after Atomos at the aetheryte nodes
- storm weather having actual bolts of lightning in the sky, and not looking like someone quickly flipped a light switch on and off
- old Coerthas (although i also like how it is now)

I might think of more later...