Here's an image to get you inspired for discussion:

And let me remind you that Goku could have his power unlocked too, although the Elder Kaioshin suggested this when he had God forms, which was ignored due to the time that it would take.Chapter: 496 (DBZ 302), P4.1-2
Gohan: "Ho-how can I turn into this mightiest of warriors!?"
Elder Kaioshin: "You transform into that Super whatever-it-is a lot, right? You'll be fine if you just get the gist of that, and throw in a kiai."
Gohan: "The gist of Super Saiyan... I-I got it...!"
This is an extra question to you for the hypotheses: had Goku's power been unlocked and gone past the God forms', could it be sensed by others when SSG/B cannot, since it would assume his regular looking form?

