Zankou,
I agree, a lot of guard pass escapes are essentially pin escapes. That is why the first two chapters in Strategic Guard are about escaping side control and n/s.
I have not figured out how much of the original Passing the Guard I am going to keep. There are parts of the first book I really like and will probably leave intact. On the other hand, I am a little concerned that some of the old stuff (the photos that is) does not look so good compared to the new. PTGv2 will be a substantial revision. I think most fans of the original will want the second edition...but only time will tell.
SFinclined,
A comprehensive escapes book would be a good thing. Strategic Guard is not that book, but there is a ton of defense in it. When I realized how much defensive material we had I did consider doing mount and back escapes, but decided not to because they are, imo to attenuated from the subject of the guard.
There is some good escape stuff out there in Judo texts if you are interested, but nothing I would call comprehensive.
A comprehensive escapes text is something a lot of people would really benefit from. I wonder, however, how many would by it. Most buyers are blue and white belts. Blue and white belts tend to want to see a lot of submissions. That is a generalization of course, but it is a consideration in selecting subject matter. Nevertheless, there is a lot of defense in Strategic Guard.