why not make this way :
1. stop tank filling at mgs & cnb and reduce stoppage to 5 minutes i.e. decongest mgs / cnb like stations as 5 minutes enough for getting down and boarding .
2. make dehri or such similar ones for tank filling i.e. 3 on route of...
more... 1400 kms or 4 in 1800 kms .
3. decongest kanpur / mugal-sarai / vishakapatnam / vijayvada / nagpur / bhusawal and likes and plan more station to & for tank filling etc ..5 minutes is enough for p.c. loading too as mgs / cnb likes have trains waiting for platform while ''others if developed'' can allow other s.f. to pass from middle line i.e. do not make tank filling at any station for more then 2 trains in same hour .