ARP is just too much, can't plan a journey 120days before or very difficult.
I suggest it like this, they should divide seats for ARPs as well like Tatkal scheme.
4 month ARP.. 30% seats
2 month ARP.. 30% Seats
1...
more... month ARP.. 40% Seats.
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Not Included Tatkal :)
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Views and suggestions are welcome :)