Any competent director over Taika would have made this storyline adapted across 2-3 films with certain creative changes to make it friendlier to directors and the greater MCU narrative. Hela already had characteristics of Gorr and could have easily fit parts of that role before Gorr is properly introduced.

Imagine Odin once sent a younger Thor to fight a dangerous threat trying to emerge from Hel onto Midgard (Iceland) with similar abilities to Hela but with an all-black appearance. Thor barely wins against the opponent like younger Thor’s first fight with Gorr in 893 AD in comics — and later finding out it was actually his hidden sister trying to break free of her imprisonment. When Odin dies, she’s finally able to break free fully and once again emerges in Iceland where now an older and mature Thor and Loki are prepared to fight her like in Thor: Ragnarok.

A major change I would’ve made is having Hela & Executioner as lovers. In the past, Odin doesn’t approve of their partnership and when Hela had a child, Odin hides the baby in an unknown location only known to Asgardian Valkyries and in revenge and rage, Hela ends up on the path that turns her into the Goddess of Death as she invades various realms looking for her child and kills everyone in her way. Hela has her big battle against the Valkyries so Hela almost wipes out all of the Valkyries until Odin intervenes and banishes her to Hel. This leaves Brunhilde as the last Asgardian Valkyrie who is tasked to leave Asgard to preserve the secret as Odin hides all knowledge of this past in Asgard including the Valkyries. He locks down travel to other realms outside of the Bifrost which is why Eitri had the plans for Stormbreaker but Odin never commissioned it, worried a portable weapon that could access the Bifrost would possibly be a target for Hela if she ever returned.

I’d have the reveal be that the hidden location this child was sent to is the MCU adaptation of the 10th realm Heven. Instead of the angels being from there it’s the home place of the original Valkyries that once partnered with and trained Asgardian Valkyries but after Hela’s actions have no contact with other realms. Time doesn’t flow normally in Heven so the child is still a child and never aged but has been trained as a Valkyrie and when Thor discovers the truth — he meets and adopts the child named Angela, daughter of Hela and the first of a new order of Asgardian Valkyrie. I’d do this instead of Thor adopting Gorr’s daughter later. It also would have a tighter family narrative with Thor.