I think this is a fascinating idea and I'm imagining the main character as a starship. And when/if you hop out, FOV/time change.
Love the idea of exploring different scales and perception of time, as well. Very fun idea and when we're talking about exploring something the size of our universe, time is definitely one of the biggest limiting factors so it's neat to play with that and imagine how other intelligent life might perceive the flow and "problem" of time as well.