Presently, if you load a Type C photometric file into a Lighting Fixtures family, and set the Tilt Angle parameter to -90, Revit aims the light source such that the 0 degree vertical measurement corresponds to the Z axis. But if you load in a Type B photometric file, with the Tilt Angle still at -90, the light source is aimed such that the 0 degree vertical measurement corresponds to the Y axis.
This means that if a user needs to use both Type B and Type C photometry with the same family, they also need to know to change the Tilt Angle parameter when changing the photometric file.
It would be better if Revit aimed both Type B and Type C photometry consistently with one another. In other words, interpret the 0 Vertical Angle to be along the same axis, for a given Tilt Angle, regardless of Type B or Type C photometry. This would allow the user to change between Type B and Type C photometric files without having to also adjust the Tilt Angle.
