Fëanor's Death, Convenient?

[Rimbaud]

Do you think that his death was better for the Noldor in general because it allowed for the healing of the houses of Fëanor and Fingolfin by the actions of Fingon and Maedhros?

The damage caused by the Oath could never be healed. Indeed, the Doom of the Noldor was bound to that Oath.

Fëanor would not, IMO, have benefited the Noldor had he continued his life in Beleriand.