Not much was changed in Maya for my Modular kit. Most of the focus and effort was in Unity. I changed the wall colors to a deeper blue and removed global illumination and ambient lights to allow my lighting to stand out more. The lights in the scenes have a warmer moodier tone to them.
Nice lighting. If I remember correctly, you’re going for an ethereal, fantasy feel with this. For that I’d suggest colored lighting; tends to give a otherworldly effect.