Making a Madhesi president is not a bad idea. (although I am not sure Rajaram Singh is the best choice!).  India has always used a President to appease disgruntled minority groups.  India had 3 Muslim presidents, 1 Sikh (Gyani Jail Singh during Punjab uprising),  1 low caste president (KR Narayan), and finally a woman, among others.  These presidents were intellectuals, philosophers, not so much of full-blooded career politicians (except Jail Singh)  , and even a nuclear scientist!  There are many highly educated, talented, respected and non-political Madhesis in Nepal.  It won't hurt to appoint one of those as the first president of Nepal.

The problem for Madhesis is that they do not feel they are seen as main stream Nepalese no matters how patriot they are.  They always feel they are treated like second class citizens in their own land.  We should do our best to integrate them in our society.  Appointing Madhesi Presdent is the first step towards that goal.