I apologize for my hyperbole in the choice of words "mass slaughter" to describe the war. The intent was to describe the war only in terms of its casualties rather than in terms of its stated or unstated political goals (since this is the nerve that Wikileaks touches).
I don't disagree with your points, and I think you articulate some aspects quite well. True Assange is a political figure. He is also the founder of an institution. To date we have not seen the rise of a virtual institution with this sort of political significance, nor have we seen one that exists independently of a state or party.
We seem to disagree on the issue of supporting Wikileaks as an act of civil disobedience. In my opinion, we are not morally obligated to obey unjust laws. Of course, we may be made to suffer the consequences of disobedience, but I do not (as you seem to) imbue the law with any special moral significance just because it's the law.
Let me remind you that it is illegal for the US to propagandize Americans. I'd argue that some of the information that is being declared "secret" is simply information that the government wants withheld for propaganda purposes.
So without Wikileaks, what check or balance exists to prevent this misuse of secrecy for propaganda? I'm curious if you think this is a reasonable question to ask and what you think the answer is.
To address your broader critique of Wikileaks, I'd argue that Assange is building a very ambitious institution, and it's currently imperfect. Some of your critiques apply only to the young incarnation of Wikileaks and (I'd expect) will go away once/if the institution manages to gain additional credibility, experience, and stability.
One quote of yours really intrigues me: Getting folks thinking about the particulars of the information distracts them from the larger picture by making them emotionally, well, irrational. This suggests that you think that a member of the public judging the appropriateness/worth of the war would be more rational if he/she ignored all the messy noise offered by the leaks and focused only on the government's official story of how/why the war should continue. If not, then I'm curious how you'd advise the rational citizen to assess the status/progress/worth of a war effort such as the current US involvement in Afghanistan.