I like that as the first thought, and you could just edit a few things as you go along... I think you should change the 'land of the gods part' more to something like 'the three Goddess of Din, Nayru, and Faore... reutrned to the dimension beyond goldens power's reign in which the land that is Hyrule bagan'.
Golden poers refers to the Trifroce, and dimension how they came from somewhere beyond the Trifroce that they created. I like to be a little potetic sometimes.
And yes, I like that idea- the more futuristic side of Zelda being slightly magic-oritented in its origin. Like the races, instead of tring to take the Triforce, they find something else... something that grants them technology beyond their understanding, an event that will manipulate their future. Technology in the medieval world that simply doesn't belong there... but to be for reasons unknown.
A good example is City in the Sky, the city that actually flots not by all magic, but the Oocca's technology. It would be different seeing the races get hold of things like that...