From what I can tell, each brick is lighted individually causing bricks lighting effect to fade to black on the far side of the direction of the light causing these lighting issues, I highly HIGHLY doubt this will ever be fixed. In the Torque Lighting pack or whatever it was called (introduced into Torque at version 1.4.0 I believe) completely redid the lighting for the Torque engine allowing better lighting in dark areas rather then a flat face.