Modifying the Last Wish System
The Last Wish System was created using the Celestial Knowledge as a base, but the Last Wish System was far easier to use, and even though it was weaker, it was more pragmatic for daily use.
However, for the current Yale, the previous Last Wish System was clearly obsolete. After all, it was created for helping him until that moment, and it wasn't planned to be useful afterward as in any case after having recovered the memories and getting rid of the curse because it wasn't difficult for Yale to update it.
Yale's stats had already reached the maximum for a Law Master despite being just at the pinnacle of the Sage Rank, and it was impossible to increase those numerical values or standardize strengths past that.
At most, the modifiers derived from swordsmanship, archery, and similar were important, but usually, for true experts, they had all the stats maxed and also had mastered swordsmanship and similar to obtain the boost.