Rewatching Thor 1, it blows my mind how they fumbled Lokis origin story, how hard is it to clarify that; Odin + Frieda = Loki, Odin + ? = Thor, Frieda raised Thor alongside Loki actually making Thor the outsider, not Loki. It leaves room for Thor to find his real mother (Geae) and expand Thor further, introducing Beta Ray Bill to take over as Thor when Chris Hemsworth retires. Mike Colter would be my pick for Bill. Fairly sure I just plugged a MCU plot hole for free.