Gojo's death means a new Six Eyes user must be born. The next Six Eyes user in JJK will be from the Gojo clan. Gojo was quite easily one of the most important characters in Jujutsu Kaisen.

The Gojo clan is one of the big three families in the world of JJK. Having been introduced quite ... the ability of the Six Eyes, and at the same time, the cursed technique of the Limitless ...

Megumi never got to explore his full potential in JJK. Adult Megumi's full strength would be interesting to see.