The point I was trying to make is that there is no scheduled use. If you are saying that it is used occasionally, then that is reason enough to keep it.
Assuming there were more engines to use, it would be nice to see a train or two originate there... since the amount of people using Beacon to commute into the city is only going to rise. 365 more spaces plus the ferry (assuming they ever find enough money to run it) plus better access for buses, cars, and better access to Rt. 9D is only going to make for more commuting.