While it is fine to return to simpler material but must we return to the same ol' keys and related areas. What good is equal temperment if one has to return to "Mom" and the key of C. Why not use JI if you are only going to use a few keys then? If they would have started with F# as a home base i would respect them more, At least this would be expanding the use of instrumental color and our ears into ares we hear little music in. There is something "regressive" in the reluctantance to add any form of tonal expansion. god forsake we might progress in instrumental colour no matter how subtle.
Sorry music and art have no choice but to move forward regardless of the consequences.