The reason the last edition did not sell, was it was a peice of crap for such an outstanding book as it used to be!
Evidently the NIC has its own agenda and it seems some were not happy with the way they were trying to run it as 3 large Fraternities pulled out.
Maybe your idea would work and would be cheaper by going to disc. But it still would need a writer to keep up with all of the changes going on with the Latino, Asian, and Multi GLOs.