Changes in this Version:
Kyle Katarn retextured again (lowered contrast and saturation in comparison to first version)
Sandworm retextured again (same as above)
Mutant Rancor retextured again (same as above)
Changed the texture of distant dunes to one that looks more natural than the one in first version
Swapped the two sand ground textures which looks better than in the first version, the tiling is not that noticeable any more
I hope you guys like it, ideas for further improvement and feedback are welcome!