I want to revise my Ghirahim theories.
Now, we know that Phi is Link’s sword, and that said sword later becomes the Master Sword. Ghirahim resembles Phi in many ways, not least the diamond motifs. NOW…when watching the Ghirahim segment in that video, we can hear part of Ganon’s theme in the music. Will Ghirahim perhaps become Ganondorfs sword? Exciting stuff.
I’m also hoping that since this is pre-Ocarina, the Sheikah will make an apperance, and we can learn of their extinction/find out if they were the interlopers that became the Twili in Twilight Princess.