This one is really a no-brainer. A layer package is a really efficient way to bundle up content and symbology since it's a FGDB under the hood. I'm in a community that depends far too heavily on KML to pass content around, and this would help us start to get off the crack by providing a nice, simple, no-fuss way to pass around symbolized content.
Scene layer packages are already supported in Earth - bring regular layer package support please!
