* From Tripura, a Raj with just 10 ac coaches may not get full. A daily SF train is prime requirement than a weekly/biweekly Raj. But Rajdhani/Shatabhi is a prestige issue for rich & powerful, so MPs are demanding Raj for self rather than a daily SF for the common public.
* If premium train like Duronto can have SL coaches, the why not LHB SL coaches in Rajdhanis. This step can make Rajdhanis to farflung regions like Tripura, Dibrugarh etc much more patronized and profitable and make a daily Rajdhani to almost all the state capitals possible without compromising on speed.