Seals from fates are used for various items. The thing is hunts should die down due to more people completing 240 gear on their main. If anything I would prefer them do centurio seals bonuses on leveling roulette or other roulettes to help new players. Then cycle the roulette seals bonus depending on how far you are in the game( 2.0, 3.0, or 4.0). But dont put it in a fate grind