Well, it has been clear since the project was announced that Manchester was going to get widened, and a sidewalk added.
The Disney owned property from Disney Way to West Coast University will give up land to the city, and the USCIS building is owned by Disney, and Disney can redesign the entryways to the building, claiming a tenant improvement, and having better driveaway access to the building will be an important improvement. The current Quality Inn will also give up land, and of course, they want better access for their new Hotel. As for West Coast University, the city has the right to claim access for an expanded road, and the actual building is far enough away from the road, it won't be an issue. So Manchester should be the same width (or maybe even a bit wider) than the current section next to Harbor Blvd.
As for the bus rerouting, it is designed to make Harbor Blvd a better throughfare for the locals, and eliminating driveways, traffic lights, crosswalks and bus stops will make traffic flow a lot easier and faster. Keeping the Theme Park folks off Harbor, whether driving, walking or taking a bus will be a big help. Moving the Bus Stop to a place that hooks up with other bbus routes (remember that the ART service is a public bus system, and is a transfer partner with the OCTA, where the passes for one, works on the other, and with the main ART terminal being moved to Manchester,well, just makes sense.
OCTA already does that with the Fullerton Transit Center and Route 43, where the bus detours off Harbor for a couple of blocks to hook up with other forms of transit. And also similar situations on other routes and transit centers, such as OCTA Route 29 and Beach Blvd, where the bus gets off Beach and detours a couple of blocks to a Transit Center.
So we will have an improved area for travel and transit that should flow better for all.