The drop rates for a lot of endgame currencies is so low that I feel it's more worth my time to trade gold badges for them (looking at you tayu head unit) So this is the method I've worked out to try to farm gold badges. I set up my team with one "tank" (defender wep, max HP, max Regen) use rackam, eugen, and zeta for the rest. I do quick quest offline until I get a mission in maniac or proud. Complete the mission then repeat. You can essentially afk farm that mission for silver and gold badge tickets. The only thing is every 3 runs you have to go back to your controller and claim a gold badge. I know it's cheesy but it takes to much grinding to level all the characters, all the weapons, awakenings, sigil upgrades etc....