As much as I love Tellius, I have to disagree with you because Jeralt, despite not interacting with much more than his kid, had better quality interactions and more screentime. Greil didn't ever seem to laugh or smile and Jeralt did so that humanized him more imo.
Regardless I hope the Outrealms extend to the afterlife so these two can hang out and be cool FE dads. Victims of one of IS' favorite tropes.
Also Jeralt's new nickname is Nun Humper lol I'm horrible