What's the difference between this and 3,000 years from now someone digging up my body and putting it on display in a museum? A bigger tomb?
If you are buried with a significant fraction of the wealth of your nation in the form of art, precious metals and jewels, then if 3000 years later the materials you were buried with are one of the largest collection of artifacts from your era, then there would be no significant difference. Otherwise, the difference is huge.
Well for starters you probably won't have a solid gold death mask and 4 coffins.