An excellent idea, Englishman. If this was turned into an established campaign, word would spread through the WT grapevine, and the knowledge that their actions will be public knowledge would quite likely result in some modified behaviour on the part of elders.
Now, I would like to add a suggestion of my own: when writing the letter to the JC, send an additional copy, with an explanatory covering letter, to the local newspapers.
This would be done with the approval of the person being disfellowshipped, of course. But if a small-paper editor suddenly receives a couple of dozen letters from all over the world talking about/protesting an appalling instance of emotional cruelty sanctioned and carried out by a local religious group, methinks that editor might interview the person and run a report in the local rag.
Now imagine the pressure put upon the JC if they know that their actions are likely to be highlighted in the local news. I could imagine some humanisation and moderation of the judicial process taking place. Perhaps some JC's would not even take place.
Again, a great idea Englishman. One which, with a bit of organisation, could have a real effect.
Expatbrit