Originally Posted by metaphysician
Why do you assume he has elder god ancestry?
Because his mother..his birth mother in the comics is a elder god, thus i'd hope that this would be something that'd be established as well in the MCU. And based on what we saw in a deleted scene between Odin and Frigga, where Frigga was arguing with Odin about his decision to banish Thor to Earth powerless, one thing that caught my attention was how Frigga yelled out the words "He's your son"..and not "He's OUR Son".
Now, if my theory is true, i would think that this deleted dialogue scene somewhat gives the possibility that Marvel Studios does have Thor's elder god ancestry in mind to potentially use