This would work if it were a reward for doing roulettes or something, like to EARN it, not a microtransaction. It worked pretty well in Eureka, getting people farming them to get the minions mounts and glamour. It'd be nice if they added an incentive like this to roulettes, even if it added additional loot for levelling jobs, crafting items, materia. I think this could work if done correctly, just definitely not a transaction.