The waiting list in NZM ICE exists because it is the solo dedicated train from Delhi to Indore taking the shortest route both distance and time wise. It does not depict the requirement for an overnight train at all. Secondly, if JP INDB gets rush during a specific time then specials can be introduced at that time. Regular trains are not meant for seasonal rush. You need to add 'Special' suffix in the imaginary train created. ;) Moreover you need to revise the TT because your sunday departure clashes with JP SC Express