Rajdhani tag is important for following reasons:-
1) IGP-BSL-Wardha/Khandwa 120-130 kph up-gradation. for AC Express, RB won't upgrade this A class route.
2)Bina-BPL and ET-Khandwa would also become 120-130 kph, hence benefitting HBJ Shatabdi and other Rajdhani trains too
3)CR would become more punctual.
4)...
more... Dynamic pricing would be removed soon