Come august, I bet it is the opposite. Having massive acc boosts on your weapons will really make current content easier, which will make it easier to progress through the Fracture NMs and "level up." The skill weapons are enough of an Acc boost for Delve bosses and also provide a large attack boost. This means you can drop several songs (no daurd required) and maybe a roll too while still maintaining current kill speeds. I bet delve bosses are beatable in august with 4 songs and no COR rotation.