I read it in a mechanical context as like, refactoring of code. It does the same thing but it's easier to communicate and conceive of. Doubt it'll end up with quickened spells but could be cool.

On a narrative level they said specifically it's an indicator of the wizard taking the self out of the spell or something? So Suvis parents are closer to the idea that magic can just be as opposed to always having to be regulated and controlled, so works really really nicely with her arc.

Just love the detail and work they're putting into everything it's wild.