Seems like, with some work and effort, and perhaps a new third rail that the FL9s worked better with, we could have solved a few of the problems that either still plague us today or took many decades and many, many hundreds of millions of dollars to fix.
Direct NYC service to High Bridge, direct NYC service for Booton Line (would have had to wait for Montclair Connection or its own connection n the Meadowlands), Bay Head to NYC with no engine change, Midtown Direct would have only required a set of ramps for the connection, could have skipped Secaucus Junction and just built connections, and (capacity problems would obviously still be an issue) but the same could have been done with the NYSW and CSX River Line routes as well.
Maybe, with netter transit times, service on the old Erie Greenwood Lake line could have been saved.
What a shame the test failed. Direct NYC service by the 1960s could have saved many headaches down the road. Oor course, the peole who own the companies that do studies would have had to find real work, but whatever.