Regarding Frieren being banned from the CMA…
(cma = continental magic association)
Even should CMA staff and leadership (sans Serie) were okay with ignoring the ban, I think Frieren is petty enough to refuse to enter any official CMA facility..
So I have this headcanon fantasy that in the future, Mage Association branches will eventually all have a neighboring facility (library, restaurant, waiting room, whatever) that they don’t officially own, specifically so they can host/talk to Frieren whenever she’s in town.