The punctuality and frequency for Virar bound locals can be easily increased by extending the Goregaon/BVI semi fast locals. Anyways, post extension of harbour line to Goregaon and expansion of metro services, there is no need to have separate semi fast local services from Goregaon during morning peak hours. I have seen it, these services run only on 50% occupancy as compared to Virar originating local services.