Hmm...although I think this theory is pretty interesting, I forsee two problems with Storm being related to Io.
1. Although certainly skin color can change through the generations and through intermarriage, Io was a white heifer and storm is pretty dark. It's not out of the question, but with a number of other bulls throughout myth and MinoTeam being pretty detailed, the color change is not insignificant
2. If I recall correctly, Io ended up in egypt at the end of the story. Although it's not out of the question to have a egypt->moors->portuguese->brazil migration of Io's descendants, it's another narrative obstacle.
But hey, love y'all's theories. Y'all are bringing up a lot of good points. I was telling my friend that we should start a wiki to help keep track of info.