Reclaiming a Throne

[Kuruharan]

I agree that he is more directly descended from Finwe than Elrond

That would give him superior lineage regarding becoming High King of the Noldor, which was the issue.

Anyway, we have seen that you do not need to be the oldest heir to become High King...Turgon becoming High King instead of Gil-galad

Please allow me to say, "Huh?"

Turgon was born in Valinor during the Chaining of Melkor. Gil-Galad was born in Hithlum considerably later. In this context it seems that you do need to be the oldest heir to become High King of the Noldor for in this case it did not pass directly from father to son.