I think it would be great if the mods were legal. They're not and I think people who use them against the terms and conditions should get their licenses removed.
Ill put it this way - if the xrt had no spoiler to start with, and a mod that gave it a spoiler (standard one) everyone would download it just like they have done with this one.
Oh get a grip. LFS Should open it's doors to mods like this, but the more mods available (in any sense) cause alot of peoples games to crash anyway. Textures and all. Which is probobly why the LFS team don't want this kind of modding tolerated.