Sniper Shot isn't needed for just Ragnarok or Accessories quest, it's helpful at any stages of progression. Sniper Shot itself could be the difference between being able to clear Ultimate or being stuck farming Expert. But like I said in my original post 1 week ago, your order changes depending on who you got. You had Amaterasu and main'd fire IIRC, from your old huge image in your sig, so obviously you didn't need to prioritize D'art.