On the other hand communists are very good at educating the masses, so magic might help class struggle depending on the magic system

Also like the learned magic nonsense is JK rowling BS anyway, magic can and should be a tool of the mysterious village witch

Unless magic is a taught skill in which case maybe the only reason the upper class is magic is because they train from the age of 7. Maybe the plot could be about peasants teaching each other magic sort of like how martial arts started as a peasant thing

Furthermore, it reinforces the idea that the families that can use magic “deserve” their noble status because of their ability.

This was an idea I've seen frequently in anime that's kind of rubbed me the wrong way. Personally I wish they'd use the opportunity to reveal that despite having all these magical powers, they're actually inept or kind of dumb, but ultimately these families are also extremely cunning. It seems like the more powerful they are in magic, the smarter they also are. People might point to 'well they have to study to have their magical powers!', except that wouldn't really make them particularly intelligent; knowing how to cast a fireball is not the same as knowing how a machine works or how to navigate diplomatic affairs or how to outmaneuver an army.

Check out GATE

maybe less communist and more uh deranged nihilist nationalist though

edit: actually it might be anti-militarism i'm not sure, haven't watched it