Using space to fit the theming of freedom was a smart play IMO as it sets you apart. Gives a good location for the theme.
I lived the crunchy noises combined with the high quality voices. made it feel like a space game with outdated or improvised technology!
Blast off leading into open space was a great decision as it gives it a nice free flow feel. and open space itself is a great example of making ambiance work well with the theme because it has unique notes and interesting panning.
The second half of open space was a great addition as well not only to add style, but also gives the impression of a new biome or something adding to the exploration feel!