Solution:

Make a duty that requires 26 player charachters, 7 pets, and 5 chocobos. You are given 57.77 mins to complete this duty and have a total of 5 mini bosses to beat, each dropping only one item each and have loot lockouts(you win from said boss, you can't roll on their loot again), oh and at 53 mins the end boss goes INVINCIBLE. If you beat him before he goes invincible, he drops 9 items, 1 each to a speciffic job. If you do not beat him before god mode you have to run the instance over. If you do win and roll and win loot, then you get the lock for four days, unless you beat him on a Sunday in which point you have to wait six, coz yo azz should have been in church and not playing ffxi...oh wait FFXIV ARR.

See problem solved.

Syn

That should be grindy and hard enough of a raid for you OP...