It can't be a "Heritage site" anyway. Heritage implies age, generational time-span. In a 1000 years I can see the Indian-replica becoming a heritage site, but even then do the Indians have the mastery to build a complex that will last a thousand years. Using modern techniques to restore parts of Angkor, such as using cement for roofing, filling in gaps etc, have failed and caused unwanted effects. The only way to make the replica last is to use the legacy method of building a world wonder.