NCR - maar bhi, raftaar bhi - Harshit Sharma

Certainly airplanes can be a preferred mode for transport in India atleast for long distance travels as more and more airports do come up. And it's these long distance trains which mostly face overcrowding and terrible delay problems.
GNWL is definitely a problem of IRCTC in my opinion just because people keep on booking does not mean they should allow it. While it's agreeable that most Indians lack basic civic sense as they see it as their right to travel irrespective of the fact that they are illegally entering the reserved coaches with non confirmed tickets and are causing nuisance to the ones travelling with confirmed tickets. But here Railways have the responsibility to ensure that the confirmed ticket holders have a safe secure and comfortable journey so it's their responsibility to see to it that only confirmed ticket holders travel and for RPF to control around 100 unauthorised people in a single coach would be too much it's an uncivilized mob out there who can even throw the on duty officer out of the moving train. So better Railways restrict them while booking itself. Unreserved passengers can be almost completely avoided by reserving the GS class in M/E and SF trains (which some months you only had suggested) second half of the WL crowd problem can be tackled by reducing the WL allowed in the first place. Then more RPF should also be hired with proper training in crowd management.
Thus almost non existent UR crowd in Exp and SF trains, reduced WL passengers and increased RPF can definitely be useful in largely solving the overcrowding issue.
With this one issue will definitely be largely overcome but the second most prevalent issue of long distance trains running indefinitely late I don't know if it can ever be solved as day by day more and trains are being added on the already saturated railway tracks where even sometimes getting maintenance blocks is highly difficult (mentioned in the CAG report).