What if Goku was turned into an angel and trained by the grand priest?

Ok so my thoughts on if Goku was trained by the grand priest and become an angel I believe he would lose all of his Saiyan transformations as a result of him becoming an angel, Goku would be more intelligent and serious like instead of his child like self. Angel Goku would not just want to fight all the time because he knows he would most definitely one shot everyone down. Vegeta would be on the path of the destruction god role after Beerus makes him his successor.