Since we have Kelemvor (God of the Dead) as one of the available deity choices for clerics, can we get the "Grave" domain added? This would be better suited than the "Death" domain from the DMG, since the "Death" domain isn't intended for player characters (if you plan to include it at all).
I'm aware the "Grave" domain isn't in the PHB and thus not part of the core books, but rather in "Xanathar's Guide To Everything". However without implementing it, you might as well remove Kelemvor from the available deity choices.
Unfortunately Grave clerics, along with Forge and Protection, are part of UA and so will not be included in the game.