What about this. All eyes will be opened he says, if you look at the titan statues in that cutscene, their eyes shut when he says. Il'gynoth, the Heart of Corruption in the Emerald Nightmare dies with "N'Zoth... I journey... to Ny'alotha...". In that sense, does his eyes open? Maybe death is awakening to his truth, and so perhaps N'zoth will kill us all to drag us into Ny'alotha. Opening our eyes by closing them, as it were. Possiburu?