It would, but Needham is being sacrificed (necessarily) at the altar of bigger fish with more passengers and more room for passenger growth. An electrified Regional Rail with 15 minute frequencies is going to eat up even more slots than Amtrak had provisioned for. There is no future where Needham doesn’t become a shuttle service to Forest Hills at rush hour. If the whole line wants high frequencies to downtown, they are going to have to switch to rapid transit over the commuter rail.