More Significant Story for Completeness

When Minecraft Dungeons II was announced, it felt like the content was supposed to be specifically focusing on the warden and the deep dark. However, after playing the game, I feel like the content does not show too much warden like creatures, or their origins. What is the ancient city and what is their relation to souls? I feel that there should be a final boss or another type of big warden-like creature we battle that is significant to the story. I understand that the Twisted Warden was part of the story, but I felt that the creature did not make me feel proud or understand the importance of the boss.

Can there be more depth in the stories? I played the first game and was thrilled to hear when Minecraft Dungeons II was announced. However, I feel that this concept can have much potential and needs more story for the game to feel like a milestone achievement.