[...]those are still photo textures, which makes more than half of final success.
Photo textures are a very difficult thing to handle and to be honest I very rarely have seen those used in a proper manner. Mostly they look quite unrealistic, because of their shadows/ light direction, plants on the wall etc. A house front taken in the morning looks in Trainz in the evening also like a house in the morning, I can not call this very realistic. That's why I don't really like them, it needs a real artist or professional graphic designer to work on them to make them usable...
For example Walter Rank is such a professional, who has quite a bunch of assest on the DLS which use photo textures in a way I can accept (look for names like WR_xxx).
unnatural generic textures. I need to say that I have similar opinion.
This is not simply a generic textures but a quite complex material with many layers:
Diffuse (mixed material) = bitmap + smoke
Reflect (mixed material) = bitmap + smoke
Bump = bitmap
And if you really look at the item, you will see, that it is anything else but a generic monochrome texture, but this is for those models actually not the point:
the usability of Your models in Trainz is disputable.
It is actually not, because the intention of the blog is, among other things, to pass my experience in reducing the polygon count of models by using projection rendering and not to create models for daily usage, as also mentioned in the description of the assets already send to the DLS…
Mick!