In the last three contracts, the "leaks" were almost SPOT ON with the eventual AIP. They were considered lackluster at best and some even concessionary at worst by a large chunk of the pilot group. It seems as though ALPA has learned how to "manage expectations" exactly the way James Spreyregan and Tilton did during the bankruptcy debacle.
The yes guys got all bent out of shape then saying EXACTLY the same things they are now. Then the AIP is published the leaks are not only validated, but they're also facts! Pilots vote yes anyway and micturate away yet another opportunity to make significant improvements in their agreement. Bonus's all around Willis.
Later. Rinse. Repeat.