That means, he saved the threatened exclusiveness of the legitimate line for Sekkan, and since then the system of succession to Sekkan was established to determine the principle, in which the legitimate son of Midoryu (the family line of FUJIWARA no Michinaga) would succeed to Sekkan, whether the family was a maternal relative of the Emperor or not, had been established.
すなわち摂関家嫡流の危機を救ったのであり、それ以後、天皇との外戚関係の有無にかかわらず御堂流の正嫡が摂関を継承する制度が確立した。