I've already got a tutorial covering texturing and shaders (both segment wise) that is in the making, and I will release here soon, so cross that one off your list
I would say a complete run through on something simple, that uses programs that are free, eg. blender, GIMP. The object could be something easy like a Crate, shipping container, etc.
Run through on mesh/model creation, polygon reduction/subdivision, appropriate polys for different models (e.g, a crate at 3500 polys might be a tad high), UV mapping, texturing, and creating of maps for a basic shader (normal, illumination), and finally exporting it all for use in FPSC, and setting it up as a static entity.
I think something like that could really benefit the community.
Then, you could follow the same process, but making an animated model instead, for example a ceiling fan or some other simple dynamic object.
Regardless, I think whatever you do should be a complete walk through, from creating whatever it might be, all the way through to showcasing it in FPSC.
