I'm sorry to dust off my own topic, but I'm bringing some news!
So, I didn't manage to add a lot of stuff recently, as I learned a lot about texturing, uv wrapping, blender and other things like that.
Also, I recently discovered that you could edit the Unity editor, in order to make, for instance, a level editor.
Wich is exactly what I'm currently trying to achieve.

As you can see, I can add my game's elements directly on the grid, which I can move around with key input.
My user interface is kinda lame but I'll clean and upgrade it later.
Also, I think I'm going to write some tutorials about Unity programming, as the Editor scripting is not that documented on Unity script reference.
Hope you'll end by enjoy my work,
see ya!