I love the original but I don't mind the direction this film took. If you're going to make a continuation of a controversial film it naturally needs more controversy like a child going to Hell.
This is what I want for Deceiver and the third film I would call Redeemer.
Deceiver starts three years later Angela is confirmed to still be possessed by the demon confirmed to be Lamashtu. The families try to unite even more faiths. Regan offers to help as her mom has passed away in her sleep. Tony seeks to atone for his sin for attempting to sacrifice Angela and if possible, to save Katherine’s soul or at least stay with her in Hell with faith Jesus will save them when he returns.
Deceiver ends with Regan praying to God to help or to send help with her being drawn outside when the shape of Pazuzu in the clouds appears behind her a gust of wind, and a man appears behind her to offer help with Regan regaining her memories and acknowledging him as Captain Howdy with the possessed Angela realizing and acknowledging Pazuzu’s presence.
Redeemer is the final confrontation to save Angela’s soul begins with the help from the most unlikely ally of all: Pazuzu.
Redeemer ends with Pazuzu successfully exorcizing Lamashtu from Angela and while grateful Regan tells him she can never forgive him for possessing her, let alone raping her to which Pazuzu says “Good”. The final scene is Tony in Hell desperately going towards Katherine reaching out for her hand and the two manage to touch fingertips as the film ends. We will never know if they will be freed or not but they at least found each other again.
Is my idea perhaps too much fan fiction? Absolutely but Believer is one too so go for it. The reason why I think Angela is still possessed is because in the final scene I think she she smiles slightly but I'll need to re-watch it.