Kos has succeeded in creating a community, but he has been pretty poor at using his power for anything other than fundraising (although he has been quite good at that). And that's with a group of people who largely agree about a panoply of issues.
The "Truthers" don't agree about anything other than the desire for a new investigation. Arguably, at one point 9-11 Blogger could have been a Kos-like community, but inevitably the individuals can't get along because their theories conflict in too many ways.
The fracturing was inevitable, if you think about it. When a movement is exploding with new members, everybody is happy, we're all on the same team. That was 2005-2006 for the Troofers. But as the movement crested in 2007 and declined in the election year, it quickly became a question of who could grab the largest slice of a shrinking pie, and the knives got a little sharper.
I don't think there's anything for the Troofers to learn from Kos, for the simple reason that Trooferism is in a death spiral and liberalism is not. Writings from Lyndon LaRouche around 1997 might be instructive for the movement, howerver.
One thing that Truthers agree on is that a new investigation is necessary. (OK, well, maybe the only thing.

) Thus, Truthers should have no problem rallying around
a 911 Ballot Initiative. The
current one has not gotten support from many activists in the NYC city area, and beyond, primarily because of doubts about Les Jamison, including allegations of financial impropriety, which I never heard until a few days ago. Even though the allegations have been public for over a year. See
here for more details.
At 911blogger.com, I have called for proposals by other activists to take over the current ballot initiative, or, if necessary, start from scratch. Such proposals should have provisions for full transparency of the process, something that's not the case right now. Let's say that this comes to pass, and there is considerably more unity around a particular effort that, in principle, does indeed reflect a near-universal belief in the 911 Truth Movement.
I find it hard to believe that, for a scenario such as this, there's nothing in kos' book that would be of use.
BTW, one reason some people have soured on Jamison is because of his big-tent approach to speakers, including proponents of DEW and nukes.
Another thing that reading kos' book could do is to cause specific groups to re-focus, even if only temporarily. We Are Change has confronted Nancy Pelosi, but as far as I know, haven't don't anything to help Cindy Sheehan defeat her for her seat in the House of Representatives. Is that really a smart thing to do? WAC's 'Code of Conduct' doesn't allow them to support any particular party, but what about a particular candidate? kos' book and familiarity with kos' success in funding candidates who went on to win election, may be just the stimulus to make a little light bulb go off in their minds.*
I certainly hope so. I can't imagine a more futile task than begging Nancy Pelosi to show a trace of ethics and backbone, on a number of issues. It'd be much better to fire her, and if We Are Change doesn't agree, or if WAC thinks that embarrassing Pelosi is better than dumping her, well, I think that's unfortunate.
* I can easily imagine the snark that this sentence will inspire. This is JREF, after all.