The Scorched

Atium expands your senses and reflexes to allow you to act on the shadows you see. I don't think that electrum has that effect. In addition, electrum wasn't well known when mistborns were around; the only ones that we see with the opportunity to use electrum is Vin and Elend. They use it a lot but they aren't given much opportunity to experiment with it and learn how to use it to it's full extent. Perhaps in shadows of self we'll see a ninja electrum user.

As much as I love this idea, the fact that Shin-Kak-Nish is in the same place as modern shinovar makes this all the more unlikely. It would take to many different elements; making it overly complicated. I think it's much more probable that It didn't rotate at all.