Gil is damn near meaningless in this game, your accumulate so much of it passively and there is nothing you can spend it on anyway you really don’t need to be going for massive Gil

Regardless thousands of people do roulettes per day, tanks and healers aren’t that rare, there is little incentives to give actual meaningful Gil rewards to such basic needs as that functionally just speeds up the currency inflation

If you want combat ways to make a lot of money try something like field content, field content is literally dripping in valuable items you can get in combat