I threw together some ideas for rules for the magic colony ship game. They can be perused here:
link to another game
The idea of everyone being mages appeals to me because I feel like it requires the players to get more creative. In D&D it's easy to just say "I'm a wizard in a pointy hat" and let the define them. In a game where everyone is a wizard it means they have to put more thought what makes them unique. But magic is entirely cosmetic, a fire mage can heal, an plant wizard can rewind time. The school of magic would be purely cosmetic. That again sounds more fun to me than making magic fit into stereotypical boxes.
Having everyone be mages also let me have fun with the core stats since everyone has magic I could really tailor the stats around that idea.
The rules thread itself is a bit of a jumble, I think most of the ideas made it onto paper though they'll likely need some refining.
The other ideas aren't off the table, it was just a slow work day so it was nice to do some creative noodling during downtime.