It's so nice to read that! Concerning the problems linked to the controller, I made the choice to focus on the core mechanic, and accept to sacrifice a little on the content side.
For the link with the theme. I interpreted it more as “building to order”. I invite players to sculpt their environment to create their own path, made to scale.
Stunning, it could be pushed further by possibly exploiting the concept of music a little to bring the theme further into the gameplay, but everything else is really well produced. The sound and visual ambience... Congratulations.