The letterhead is meant to convey the fact that all who are writing aren't just welfare recipients. It gives an air of legitimacy to the Witnesses.
So, the Russian Government are going to receive loads of letters from window washers, plumbers, plasterers and electricians. If this adds an air of legitimacy to the campaign, then all well and good.
However, apart from instructing the rank and file to write letters, has there been any mention of Watchtower representatives themselves flying out to Russia to meet with the government to discuss this issue face to face? Surely they should be pulling out all the stops at this worrying time when their own loyal followers are in desperate need of their help and support? If they want an air of legitimacy then this is surely what should be happening. Maybe they ARE doing this and I missed the announcement.