what are some fun ideas you have for events?

i have a few:
Echo adventure: Collect echoes that match a description, or hunt down one of a specific main stat or substat.

Trial character stuff: Event where you're force to use a certain character to clear eg;

Anko: you have to use her forte heavy to negate an attack that would otherwise one shot you.
Rocc: to juggle balloons or enemies.
Iuno: to hit enemies in certain phases and jump between her two states
Solo phoebe challenge: where you put stacks on and then survive before swapping to absolution and hitting enemies. Enemies have stacks for longer.
etc.

bring back the mud stuff, where you have to use the tornado to clear it in certain time limits

bring back fishing and you have time limits or see unique maps and have to fish fast.

bring back the turret with more challenges

bring back the inferno rider stuff and add challenges

Hide and seek; find some hidden treasure on a map with clues or certain trial characters

Camera event upgraded: instead of boring camera stuff with no effort, you have to talk to npcs, move things around the map, and replicate a certain scene to get points.

Bring a map and have trial characters that can't hit the enemy like carfty against the aero balls. Then you have to get through the map without dying, or unlock certain characters to clear the map later on, like getting a havoc one to his the enemies. Or how about an enemy that changes its resistance and you have to lure it to places to damage it