Just wanted to get out my wish list for seasonal/special events.

Atmosphere:
City / Outpost should have themed related decoration
Cities should have a musical twist based on the event
Environment should reflect the time of year; fall, winter, spring, summer. Nothing over the top but just a slight change

Event:
Event FATE - event related of course
Event Dungeon - Both lv 15 and Hard Mode
Event Trail - Both lv 15 and Hard Mode

Rewards:
Event themed Minion
Event themed Armor / Outfit
Event themed Chocobo Barding
Event themed Weapon
Event themed Emote
Event themed Items