I think this mechanism is an important one for members of our community for precisely the reason you mentioned. Situations on the ground with regard to homophobic and transphobic persecution are changing. We are seeing a backlash such that as groups organize and ask for rights, the level of violence is increasing. Countries that may be moving towards greater rights and safety for LGBT persons could change, so it is very important that there be the option for them to reopen a case in those circumstances.
On May 27th, 2010. See this statement in context.