Arthur… had a lot of wasted potential. Had his good days, had his bad days, got a lot of partially-filled squares on this chart because of that. I think his overarching story is interesting, but they did put a hold on a lot of his character development, and while it did get mostly shoved in at his death, I don’t think it was ever complete even then. It also makes sense for his characterization to have been waylaid (at least up to the end of season 4), so I don’t think it’s a strictly awful writing choice, but it was poorly executed. They either kept us hanging for too long or they overhyped him, which chips away at any affection I have for him. Dude had some double standards I would’ve liked to see acknowledged, but the narrative didn’t seem to recognize it for what it was. Lots of screentime that didn’t do much for me personally.
I think that she served her purpose well in her episode, but she should’ve been introduced earlier in the series (even just earlier that season) and should’ve been given more story. She’s awesome and her characterization as a martyr is compelling but I don’t think they utilized her character as far as they could have, in part because she was really only introduced to be fridged as inspiration for Mordred’s rebellion. Would’ve liked to see more of her.