As an outsider looking in, I'm astonished. You guys need to set a hard deadline and stick to it. If it doesn't get done by the deadline, take action. Immediate action.
Even if everyone at the negotiating table is talking about great progress. Even if you are one item away from a TA. If you don't have it by the deadline, you don't have it by the deadline. Take action against your MEC, your company, etc. Take it into the pilot groups' hands that there will be no more games.