12359 is the shortest GR of IR.. only 9 coaches ..
RJPB GR was extended to BGP coz SBG loop has been neglected since a long time.. kisi ko Vikramshila me ticket milta hi nahin jaldi..
12305/12306 has been running via since a long time (earlier it was twice a day bt soon after RJPB Rajdhani became a daily train the HWH Rajdhani became a weekly train .. we all know how much reluctant the IR is about trains.. OLD trains ke sath jyada experment nahin karti Railway..
12350...
more... has RSA with 13423 so frequency increase tabtak nahin ho sakti jabtak dedicated rack nahin mil jata.. ER i dont think new rack dega itni jaldi (even Poorva ka ICF rack hai ER ke pas fir bhi)
bro ur suggestion is good in fact mind blowing lekin IR ko kaun samjhaye :P