Plenty of stuff here and cool ideas. I digged the concept of the wandering cities, and rummaging through all the assets you submitted I could get a general picture of this world you were aiming to depict. Regarding the assets presented, the difference in development stage of each of them was very varied, from clearly a draft to a more finished product, but among them the superdetailed PRD/HLD document was particularly useful for having a clear image of the game/world (it is also the first time I read one of these and it was really interesting to get a peak at how games are actually designed).
The fragmented nature of the materials and the lack of a character-driven narrative, or connected musical pieces or artworks made it difficult to have a sense of progressing story, vibe or deep emotional connection, and that might be detrimental to the experience of the viewer and make it less immersive, as one lacks a guiding line to hold onto, but I understand your entry was more thought of as a virtual pitching of a game concept, and for that it works great and feels really comprehensive.