Yes when the most asked for thing when it comes to leveling is an alternative to fate and the most suggested thing is repeatable quests or the quests re-opening up on every single job the best solution is more forced grouping in the vein of the old FF11 grind. No, you introduce forced partying to kill single mobs in a group of six and the player base will bleed out. Most won't complain. They'll simply leave.
You want to make grouping a bigger incentive and have people learn to play their classes? INCREASE DUNGEON EXP and give more reasons to re-run older dungeons/content.
