I think Nepal should be divided in half and given to India and China accordingly.
1. All the hill/mountains to China (can become part of Autonomous Region of Tibet).
2. All the Terai region to India.

I am sure all the people in Terai people will be happy with this arrangements.
Those in hilly area they can choose either tobe exported out of Nepal just like Bhutanese or country of their prefrence. Me being from Pokhara probably will fall in first category, which am very happy to announce that I will automatically be part of World's 2nd biggest economy and all the development that Chinese wil bring in. And eitherway Kathmandu is already run by Maoist so no big deal there.
Lets celebrate ya'll.