Nah Aunt Josephine was perfect, I would equate her casting to like Daniel Radcliffe as fucking Harry Potter even though Josephine is a far more minute character even in the book but also in the grand scheme of things

Edit: also, now that I think about it, I feel like the movie was purposelly or at least played out in the continuity of its real life journey to Netflix development/syndication as like more of an apératif to get people interested in what was (at the time) a popular but still sorta niche tome of a series with like the weirdest humor that's accessible to not unsharp children