I'm an oldfag, so no idea what's the best domain for newfags right now. Is it still Emblem/Shimenawa? Because you can at least use Shime's 2 pc with Glad's 2 pc for atk scaling dps whereas Emblem goes for the most basic supports like XQ and XL. Or maybe the new best thing nowadays is just farming Scroll while using strongboxes for any set you need.