Yeah that is pretty much the idea of it I think I explained it pretty well, watching this video will give you good idea of what to keep, what to throw out. But when you starting out, your priority will be just keeping gears to finish set bonus option first. For example, getting atk speed, atk, or crit dmg set for your dps unit For tank unit, using whatever gears to give hp/def set Then you move on when you actually get good gears like maze/gordias/t7 relic gears/ and such and spend tuning/set binary