Has anyone made a fullpack covering all dds textures for a Cartoon style? simplifying them to the "FR Legends" style
I thought a lot about putting this idea into practice, but knowing if anyone has already done it would be interesting, especially to see how it looks in practice.
LFS is already very light, but with textures like this it would be light and pleasant to play with non-detailed textures.

I'd highly doubt it, as LFS is a simulator, not an arcade game. You could (somewhat) easily achieve what you're looking for by running all the .dds files through a cartoon filter.

There is no need to modify textures, Live for Speed includes a post-processing shader, which can be modified. Here is a screenshot where Sobel and quantization are applied directly in game