lydianchromaticconcept.com

Mick Goodrick's Advancing Guitarist book contains some sane reflections on the LCC. Mick and George were friends and colleagues.
Here is a quote from page 62(the underlining is mine):
"I personally think that the most valuable aspect of the L.C.C. has to do with the way the author "looked at the overview." [u]The way that he chose to [/u][u]organize it was one of several possibilities.[/u] But the fact that someone could look this way is quite valuable, I think. There are examples of L.C.C. thinking that I've found very useful. You'll find some of them in this present volume. Again, I must add that my own feeling is any system has certain "traps' built into it by virtue of being a "system." On the other hand, to diregard the benifits and valuable aspects of someone's work just because it's a system would be silly. So, my advice would be to check it out if you're interested, and takes from it what makes sense to you."

Joey, Do you have the Advancing Guitarist? Starting on page 68 their several pages of examples where Goodrick is using some ideas from the Concept. You can call them other names too (chord substitutions, modal transpositions whatever floats your boat).

There is a Goodrick quote in the first post of this thread. In the book there are several examples of chord changes with comparisons between different concepts for dealing with them. This section is followed by several pages of examples of 'Uses of Cmaj7, uses of a Cmaj7b5, and uses of a Cmaj7+5...that fit neatly with LCC thinking.
I bet he was something else to study with. I remember the line in the old Guitar Player interview with him where he said the first thing he did with a student is 'try to get them to quit'!