For over thirty years Morocco has been firmly committed to spending a great deal of money and effort on Western Sahara without any prospects of return on this investment.
Even were Western Sahara to achieve independence or autonomy it has no (zero) prospects of ever being a viable economy. The United Nations w
ould prefer to spend money and resources elsewhere. There is no solution to this scenario. However, if one can obtain a little bit of flexibility from Morocco and groups like the Polisario and invert the objective of the United Nations a very interesting Nash equilibrium ("all win") is obtained.

We would b
e inclined to
offer at least one non-binding referendum with biometric validation (to insure only one vote per person and that few dead people vote) for Moroccan citizens. The choices by region (or whatever the Moroccan government prefers) would be

A. Morocco attempts to retain all of the Western Sahara; no maglev from Laayoune to Casablanca to Cairo and Mecca; with diligence, no major declines in education, employment, poverty, health care or the Moroccan economy.

B. Morocco retains the northern portion of the Western Sahara including Laayoune. The southern portion is ceded to the United Nations for their new world headquarters near Ad Dakhla. A 10,000 kilometer maglev network starting in Equatorial Guinea or even further south follows the western coast past Casablanca and Rabat to Tangier before turning east to Mecca. Detailed rail routes and predicted changes to social and economic measures would be provided for each of the 16 Moroccan regions.