New commuter rail schedules are in the works, but already some are generating complaints from customers and lawmakers. Along the Worcester/Framingham line that goes through Newton, an early peek at the spring schedule shows many changes. While some trains from MetroWest will now run express through Newton, peak trains will originate from Framingham and may be less crowded and more reliable. Those relying on the old schedule will have some surprises, however, as there appears to be a loss of service at peak hours. Is this an upgrade or a downgrade in service for Newton?