A new magical council is formed featuring a few familiar faces, lets say Moon, Eclipsa, Glossaryk, that Giraffe guy, Father Time, maybe some new ones like a representive from Tom's place. I'd love to see Miss Skullnick possibly on the council too, as she represents a demographic of Mundane Humans suddenly thrust into this Magical world, which she by now is experienced with.
Toffee is ressurected but left uncertain on how everything has panned out and his own nature, gets a seat on the Magical Council but is still cunning and scheming.
Eclipsa withdraws from the throne of Mewnie, deciding to rule on the Monster Throne with Globgor, but she does join the New Magical Council. Mewnie throne is left uncertain to who should take power due to circumstances, bonus points for an episode or two arc where they are struggling to find who the rightful or most rightous heir should be, should the queen be chosen by birthright or merit, ect, and bonus bonus points if at one point it looks like the most eligable candidate is this "Princess Turdina" character, as she is clearly of noble lineage and heroic deeds as well as experienced with the wand and demonstrating leadership qualities in organising the uprising. Naturally everyone ends up picking Moon or Star (And thus for now, Moon) in a round about way but it could be a good couple episode squeeze.
Then the series is mostly about dealing with magical hijinks because everyone has a bit of voodoo, what is Janna getting up to? Is Jackie actually a Mermaid? How are the kids from school coping under the wardship of Principle Skullnick? What is Mina up to? How does Marco's family cope now fully immersed into this magical world? The city mall has merged with some ancient mewnie temple and is full of magical beasand froyo-stands people go to explore. Why does Starfan13 have some really powerful spells, like unreasonably powerful spells.