Very promising, as always. By the way, I'd have some "noobish" question about textures. Namely, I was wondering how the textures you make on a 3d model within blender are handled outside of blender (such as "in game", for instance). In particular, I have no clue as to how specularity or bumpmaps would be managed. In the same trend of questions, do you think there might be a remote possibility of using materials developed for Cycles render?
At this point, I personally never tried to create objects in Blender so that I would import them in game, but I am definitely considering working later on items such as treasure chests, potions, materias, etc. In addition, some fields include very large 3d objects which would have to fit somewhat seamlessly with the background (the trains of the train graveyard come to mind, in particular). Having proper texturing will be very important for these tasks, so if you'd have some tips, it'll be much appreciated.