Support the same coordinate systems that ESRI supports

Recently I was making a tiled map service and disovered that the coordinate system I was using was supported by ArcGIS Enterprise but not Essentials.  I realize that I can add the wkt of systems unknown to Essentials and make it work, but I've seen trouble in the past after having to rely on custom coordinate systems.

Please consider supporting the same coordinate systems ESRI does as part of your efforts to maintain compatibility with new relases of ArcGIS Server/Enterprise.