It is a known fact that 12381 suffers massive delays at and around Allahabad at outer (near Prayag) and on platform (as it goes on Pf 5,6,7) and has to wait for Rajdhani gang for crossover.
A suggestion to divert it via (BSB-MUV-ALD) same as that of 12559 Shivganga which hardly loses any time at outer or platform.
Only to improve punctuality (Only Jhanghai would be skipped)