Right well, here's what I was thinking...The current system is brillant for exercises, things that you can apply your fingers to the fretboard; however, what you need is a "primer" or introduction to the techniques and ideas (theories, rules, etc.) involved, then the other methods can be used as exercises to "polish-up" the skills.
Basically, the lessons say, "To do this technique it's important that...blah" whereas what the current system could be used for is "try this to develop you blah technique"....that probably make no sense what-so-ever, but there you go!