I've seen NPCs that looks the same, even if the colors are different. As days went on, I still see the same interactable NPCs around the (current) map and even outside the map through adventures . . . and I understand that it's not a full game yet.

So I was wondering if there will be more new, interactable, variable, and new dialogues from NPCs?

(They can reuse the same few characters, but only IF they're different than last time.)