News came today that The Exorcist was cancelled
Showrunner, Jeremy Slater, shared that were a lot of fun options going forward.
Marcus' divine moment: He knows Tomas is in trouble, getting a message from God, but doesn't know where he is yet.
Marcus' hunt for Tomas using the underground: He'd be encountering a lot of different people all fighting the same fight (Shamans, rabbis, people of different faiths) since he can't trust the compromised church anymore.
Marcus and Tomas' reunion: It wouldn't happen in the very beginning, but it would be a big reunion.
Tomas and Mouse's relationships: Marcus was very protective of Tomas, but Mouse sees him more as a potentially controllable weapon of war.
Flipping the sacred script: Tomas would be the main exorcist, while Marcus would be the one looking for him.
Flashbacks: There's 6 months unaccounted for when they are apart, so it would show what happened in that time frame.