That's a tough nut, I never noticed the light is coming from a different angle in my tiles.
Fixing it would require
alot of work which I'm not too keen on, especially since mirroring the tiles just wouldn't be enough.
Besides, my tiles don't even fit with the other lix tiles style-wise, so leaving them as-is wouldn't be that bad, right? Not that I'm against mixing tiles, I just don't think that the end result's look good. For example the default steel pieces of lix don't work with the gore set at all, that's why I tried to make my own.
But... if majorty of the people feel that the lighting should be mirrored, I guess I have to help do it.
Raymanni likes to keep vertical beams when the horz beam would look identical modulo rotation. Since Lix editor rotates clockwise, rotating a vertical beam takes 1 rotation in the fixed shading, but 3 rotations in the "wrong" shading, to make it properly horizontal. It's a small advantage again to fixing, but it tips the scales for me.
Yet again I haven't thought about the actual "making levels with these tiles"-part... We could always replace the vertical parts with horizontal ones to decrease the amount of rotations needed.
But this would break "Let's block and Blow?" and "Over My Head" again.