- Chris Hemsworth's has one movie left in his contract. As with the other phase one Avengers he'll likely die and this will be his send off film. Since most of Thor's family and loved ones are now dead it seems fitting he would join them in Valhalla. Visions of his father with his near death experiences in Ragnarok may be foreshadowing or suggestive of this.
- According to Gunn this will be a Gamora film. The end of Endgame supports this possibility. Gamora was seen in the Soul Realm during Infinity War.
- Nebula gives exposition on what planet Vormir is in Endgame. Its apparently a planet that sits on the edge of this world and the next. There is a large vortex on Vormir. What if this vortex is a portal just like the vortex on Sakaar were portals. Could this be a way to obtain the original Gamora's soul again? Merge it into the NuGamora's body? Maybe even a swap?
- What if NuGamora falls in love with Adam Warlock and wants to reside in Soul World with him and trades off with the original Gamora?
- Adam Warlock was teased at the end of Guardian's 2. I think he's the antagonist of this movie and will have soul realm connections just as in the comics. I hear Zack Efron will play him, he's usually funny in his comedy movies. He does immature pretty well.Which is good for a child-like newborn such as Warlock.
- Soul Realm could also be Valhalla, another way Thor could be sent off.
- Korg & Meik accompanying Thor with the Guardians. They're aliens and would fit the mold with their personalities. They were also on Sakaar so they could provide exposition on Beta Ray Bill since he was apparently a Champion there once. If Beta Ray Bill shows up.
- Reminder: Beta Ray Bill's planet was destroyed by Surtur and fire demons in the comics. Since Thor/ Loki unleashed him BRB may initially hate Thor before becoming his ally.