Yes agree with you instead of halting for 11:00hrs at Lingampalli , it can be extended up to GULBARGA so that it can depart from SC at 5:30hrs & reaches GR at 9:50hrs and depart from GR at 12:40hrs as it reaches SC at 17:10hrs .
Other thing is that there no train between 6am to 12pm in this route , which benifits both the HYDERABAD KARNATAKA region peoples .