What you said is fine, but you still are missing a point.

Technology will make us go to Nepal in five hours, perhaps within 30 or so years. But even then, you want people of Nepal to think similarly, i.e. will they too be rich enough to do so? to come to New York when they choose to? Do we want to make a trip to visit a darn poor country all our life? I think part of guilt/nostalgia should come from the fact that we too were supposed to do something there.[making one or two school or giving scholarship are not what I am talking about]

Particularly those people who have skill, who can do research independently, and who can lead the country should go back because there is bigger reward. I know there are people whose life will be very miserable in Nepal and they should stay here.

Leadership should come from the best brain, so I think the best Nepali brains in USA should first go to Nepal. Not only they create opportunities for others, they are less likely to fail and more likely to be inspiration for others. Then slowly other better brains will follow.

Ideally, what we want is in 100 years of time, let those from the lower spectrum of intelligence wander around the world for a good job, while top brains have enough resources/money/opportunities in Nepal.