The Watchtower claims that the great crowd has no Mediator between them and Jehovah. But in reality, the Governing Body has taken on the role of Mediator for the great crowd. A Mediator is a go-between, an intermediary.
The Watchtower teaches that to get to Jehovah, you have to go through the organization. No hope exists for those living outside the group. To be a part of the organization you have to obey everything the Governing Body says, regardless of whether you feel that it's actually supported by scripture. Sure, you can respectfully disagree, but you face disfellowshipping and expulsion from the group. If you chose to not obey and follow the imperfect men that make up the Governing Body you risk membership in the only group that can survive Armageddon. Yes, Jehovah's Witnesses say they are loyal to Jehovah, but the cold hard reality is that they must be loyal to imperfect men and their ever-changing interpretations of "truth".
I'm actually surprised that the Governing Body hasn't put it in print that they are the acting Mediator over the great crowd to demonstrate their authority over the rank and file. Perhaps they realize that removing Jesus as the go-between for 99.9% of Jehovah's Witnesses (the great crowd) won't sit right for many of the flock.