While the original ISO provides the foundation, modern technology allows us to push "Skyward Sword" into a realm of "Extra Quality" the Wii could never achieve:
If you are hunting for a "100% complete" save file or playing to achieve it, the narrative payoff is substantial. This is the earliest point in the Zelda timeline. skyward sword ntscu 100 iso high quality extra quality
Textures are still blurry. Solution: In Dolphin > Graphics > Advanced, enable “Load Custom Textures” and “Prefetch Custom Textures”. Increase texture cache size to 2048 MB. While the original ISO provides the foundation, modern