I live in Greenpoint and have no need for this, the G and the ferry are good enough to get me to any of the points along the proposed line. If they really want this they could just allocate a dedicated bus lane that could potentially double as a bike lane.
A "great transit equalizer" would be an expansion of the M to LaGuardia and the N/W to the Bronx.
There were some rumors that Andrew Yang might run for governor in NYC, would actually be interesting to see him run for Cuomo's seat. A competent governor would unify the MTA, NJ Path and LIRR under one system and potentially add a few extra stops in Queens.