What is stopping India from retiring crappy trains like Shat(lol)abdi and others and making everything into Vande Bharat? Also btw, Vande Bharat average speed is on par with Amtrak. Amtrak is 1970s era technology. This is a good thing, but, India has much to catch up on still.
Agree with your comment on having multiple trains but doing the same service.
Shatabdi, Jan Shatabdi should be stopped and VB should take over as singletrains with multiple timings between cities.
Also MEMU should be increased between smaller cities and Capitals. Should have ACs.
Superfast/Express distinction needs to be removed. Just single Overnight express trains with 3AC setting. Pricing should be 1-1.5 Rs per KM. Also increase the speed from current measly 55 km to somewhere around 85 kmph.
Vande Metro needed more. Can be used as upmarket replacement in certain sections.
Rajdhani, Duronto, Sampark kranti should be replaced by VB Sleeper. Except Rajdhani remove 2AC and have 14 3AC and 2 1AC (Rename as Business class) on the other two trains.
But main things. Increase MPS in all critical routes like Del-Mum, Del-Chn, Del-Kol, Chn-Mum etc. Then station yard remodelling to allow seamless entry exit for trains.
IR should be an Track maintenance companies, Introduce multiple train operators like in Europe, Government should have an say by making IRCTC as government owned train operators followed by other Private operators.
Break Rail factories and make them as separate PSU with corporatization.
Also IR should be made to concentrate on only Maintenance of Tracks rather than running trains which they don't want to do and also bleed money.