The Mogtome event has created too many people who play lethargically in various roulettes, which by the way is against the ToS so thank me for informing you later.

There's already a piece of content in the game that gives you 20% of the rewards if you play badly/AFK, and it's Chocobo racing, which happens if you get last.

They need to do that for every part of the game, there's no reason for someone in Frontlines to do less than 100k damage to other players, just none. That means they were either AFK or just doing nothing the whole time. They should not get any reward, why should they get as much reward as the people who carried them to victory with 15+ kills ? Same for dungeons, if you do less than 3000 DPS in a Lv90 dungeon you should get no reward, because an auto-attack is 3000 damage, if you do less than that that means you're not even using auto attacks really.

This isn't to punish players who are just bad but to dissuade players who ain't even playing. As long as you are trying you won't get no rewards don't worry.