I know someone who worked for an HVAC sub for the building and they said it was really hard because there weren't plans as they were used to working on at the time.
It's much harder and less self-indulgent to start from a human-scale brief for a working and/or living environment and build a functional triumph that is also visually striking and original.
You can get away with being transgressive and challenging™ for art galleries and museums, but offices and homes need a whole other level of integration.