Things are getting better, i've fixed some artefacts introduced by the detail textures algorithm, and i've added variety to the detail textures.
Still, i'm not happy at all. Of course, the two screenies above are pretty good, but due to the tiling patterns, the quality of the low-orbit views has been greatly reduced. That's a real shame. But i can surely improve many things. I still have to improve the heightfield & noise generation and the rules used to procedurally map the terrain. The lighting is a bit too uniform, too.