Have him be a middleman between Marco and Star while Marco's trying to find her, with Tom being conflicted about whether or not to mislead them and keep Marco out of the picture for good.>Increase Buff Frog
When Toffee/Ludo starts gathering forces, he's forced to get back in action to defend his family from the coming violence, maybe even becoming some monster resistance leader.
When Eclipsa is released/revived, she encounters him and offers to house and protect his family in exchange for his services.>Lessen Pony Head
I know this isn't going to happen because the book spent like six pages on her family so we're getting at least one more Pony Head centric episode, god help us>Lessen Oskar/Jeremy
They're probably written out at this point anyway