I can visualise 2 different approaches to the high-level gameplay experience:

#1 Storytelling + text/image based
Backstory, sound, deep text -based stories, breath taking videos to calm the spirit, and action based on entering/leaving a spacetime

#2 Abstract 3D environment
More control in the hands of players, a simulated abstract space made of datapoints and nodes, building pathways in a more "technical" way.

Perhaps we can combine both.