From the existing rules, only Top 8 of first 7 rounds are qualified for the 3 rounds of Final regardless 卷心菜 withdraw or not. Since the rule did not talk about cases of withdraw for the 3 rounds of Final, any changes now could result in the appeal of 胡伟良.
When we introduce any change, we need to study all points.
I believe SIXGA Committee of this Singapore Open Event (Rule No. 14) has considered all points before the release of pairings for Round 8.