I don't say this to discourage efforts at toppling the beast, but we need to remember the real life impacts that such an implosion of the WTS would have on many thousands of people. They are depressed already. Imagine if the basis for their hope is gone, too. Imagine if they lost their Governing Body mediator. Imagine if their leaders are proved false prophets.
I would argue that witnesses are depressed, because they know all of the things you state above. Now, they won't admit this to themselves openly, but deep down, doubts rage. It's similar to some one who experiences a traumatic event. They often block out certain details of the event, though those details cause them anxiety and depression on a sub-conscience level. They may not be able to put their finger on why they feel angry or sad, or have nightmares, but they do. I think the witnesses suffer depression in the same way. The basis of their hope is gone. The governing body is not their mediator, and they are false prophets. Only by aknowledging these facts, can the JW address the root cause of their unhappiness, and truly find peace. I think the loss of friends and family, who only love conditioned on your continued faith in a religious organization that you no longer believe in, is no loss at all. In fact, your continued dependence on their love and approval could prove very emotionally unhealthy.
My 2 cents