I attended a meeting regarding the Tri-Valley Project. My notes are in the PDF file that is attached.
In a nutshell, there are pros and cons to this project.
The primary concerns for me are the width of the trail, the "upgrade" of singletrack (hardened surface, not asphalt), and the material (asphalt) proposed for use throughout the trail.
The positive: access to the Big Pond area. More all-weather trail.
So, read the notes and decide for yourself. But, whatever your opinion, make sure you attend the open house and you voice your opinion.