Isaac mirrors the Captain in his conversation with Hector. Even drinking lime water just like him. Adding to this us Isaac's cloak is the same shade of blue as the Captain's coat. Showing that Hector had gained the same level of wisdom as his fellow human.
Morana and Striga decided to live by renting out their vampire troops as mercenaries to the settlements that lack manpower. It's a simple life. But as long as they have each other, they don't mind not having a goal beyond it.