Forgive the stupid question, but why do we need to keep Nashua exactly? I don't drive through there, so I don't know how bad traffic already is, but would it not be possible to consolidate Lomasney, Nashua and Martha? Obviously, the Alcott tower and the Whitter Place garage ramps are constraints on making Martha bidi, but if you one way Nashua, in it's current alignment to N/W only, you'd open up a non zero amount of space. It's already possible to do that anticlockwise loop, and would come with the added benefit of cleaning up the science park intersection.