On the topic of BPD it would be really nice if Viv actually let Alastor end up being positive representation of neurodivergence by having him learn to trust and open up without fear. I was suspected to be BPD for a long while before finding out I was just traumatized and autistic, but the experience left me with a soft spot for others with the diagnosis. There's a massive stigmatization of the 'illness' and some positive character growth for someone struggling would mean a lot.