The problem with SGUJ is not just in terms of Railway expansion but also approach-ability by road that would be catastrophic if SGUJ expands beyond a limit. On a normal day, a road traffic jam near Mahananada bridge and SGUJ thing is a regular affair. Not to forget the presence of a bus stand near by.
I'm not sure to what extent then, an increase in footfall at the station would affect the present state.
The expansion of SGUJ should not be problem, a couple of platforms can be easily made there considering...
more... that MG Railbus has been permanently discontinued.
On the bit where NJP expansion should happen, that is actually a valid point. The problem with NJP, I think is that there are certain time periods when the load is high. Hence, the distribution of trains throughout the day is uneven which creates problems. At certain times in afternoon, I've seen all the platforms of NJP un-occupied as well. In any case, a couple of new platforms, would really help in those peak hours when trains are stranded near Ragapani and Ambari Falakata.