Ty! From what I know, the author intends to finish the story in vol 18, so we should get a season 5 (hopefully).
Is anime doing well in adapting the novel?
Yes to "villains perspective". And we get the justification for that as well. In a way, Ainz may kinda think like the whole world is a bunch of NPCs, at least the Nazarick bunch is the group he created with his friends over 12 years, so ofc he's attached to them.