I have one and only one ans to your all questions. The reason I was telling that development of Nimpura stn to a full fledged station with all pgr amenities and stop some more trains there and that will reduce load on Girimaidan stn and also Kharagpur station also because
1. NIMPURA AND MALANCHA IS ONE OF THE HIGHEST POPULATION PLACES OF KHARAGPUR.
2. THE DISTANCE BETWEEN NIMPURA AND GIRIMAIDAN STATION IS JUST 4 KM BUT DISTANCE BETWEEN NIMPURA AND HIJLI STATION IS 11 KM.
3....
more... NIMPURA HAS VERY GOOD CONNECTIVITY WITH GIRIMAIDAN STATION BUT VERY VERY POOR CONNECTIVITY WITH HIJLI STATION ALMOST SAY 0 CONNECTIVITY BETWEEN THESE AREAS.
If SER develops Nimpura stn and stop more trains there a huge population of Kharagpur will get benefitted as they can directly catch trains towards side from Nimpura stn and they don't need to go to Kharagpur stn to catch those trains. That will reduce load on Kharagpur stn also.