A savvy developer would've proposed a decked Bus Maintenance Facility large enough that MBTA could cease operations at the Charlestown and Everett maintenance facilities; preserve a 200' setback from the Malden & Mystic Rivers for wetland regeneration and recreation; construct 1000-2000 condos in skyscraper towers atop the remaining lot site; upgrade the subway station into a climate-controlled Grade A station; and negotiate a land deal with MBTA for the Charlestown and Everett facility sites to redevelop into uses consistent with demand in 7 years.
Conservationists get more permeable surface at the Wellington peninsula and wetland regeneration.
MBTA gets its modernized, all-electric, climate-controlled bus maintenance facility.
Housing advocates get a huge shot in the arm with more transit-oriented housing.
City of Medford gets a boon to its taxable real estate, hits the checkmarks on Section 3A of the Zoning Act, and gets the waterfront skyscrapers the Economic Development office can champion on materials for years to come.
Developer's reward for project well done are two terra firma sites strategically located in 1) City of Boston near Sullivan Station and along the water, and 2) City of Everett adjacent to Greater Boston's only licensed casino establishment, and already zoned for anything from thousands of hotel rooms to expanded gaming area connected to (but operated by) Wynn Resorts, or even a Revolution Stadium.
The public gets more transit-oriented housing, more green space, superior electrified bus service, improved air quality, the added services the Cities of Medford, Boston, and Everett can afford with more intensely leveraged taxable real estate, and above all this would wholly improve the livability of these areas.
^^THAT is how everyone would win.