The city REALLY needs to figure out the Morrissey Blvd. traffic circle asap. The traffic in that area is going to be insane...it is already intense, but...2000 more apartments AND office space that rivals the Pru...?!
I vote for a continuous flow intersection (CFI) at the circle combined with a system of moving sidewalks above grade connecting the university, the museum and this with rapid transit. Also, if and when; JFK/UMass is the logical eastern end of the urban ring, and this would assist that program.
Money, money, money. These plans seem like a 20 year build out. Surely, the population along the Red Line corridor will increase by 10's of thousands during that time, (hello Andrew and Dot Ave to Broadway) and this bottleneck will persist unless real change is made. I would not bat an eye at a $2 billion decision.