In my opinion, the Vitruvian Triad, ordered from most important to least important, would be Firmitatis, Utilitatis, and Venustatis. Firmitatis would be the most important because, first and foremost, the building has to be stable enough to withstand natural elements such as wind to be safe. The next important would be Utilitatis. If the building does not serve a purpose or is not functional in any way, there would be no point building the structure in the first place. The least important would be Venustatis, since beauty only makes the building stand out or blend into the surroundings.