Allow us to build coffins out of various materials
Harder wood types or better grades of metal should affect the overall "quality" of the casket
Let us make tombstones of various sizes
Small - a plaque with the dead character's name and the time of death
Medium - a small stone mound with similar functionality as other tombstones only a longer personal message can be left by the player
Large - a large and impressive stone which has a decently high material cost to it to give the dead a sense of "status"
Placing a skeleton into a built casket (preferably with the skull still attached) and then burying it with a headstone will grant the direct ancestor a portion of their relative's stats based on the size of the headstone used, the amount of remains being buried, and the quality of the casket. Harder woods and better tier metals would determine the "quality" of the casket and how much care you put into laying the person to rest
If the body is placed into a casket without the skull you will get partial rewards in inheritance
If you return the skull to the casket before burial you will receive full rewards
The skeleton alone can be buried, but without the skull you will be limited in how large of a headstone that you can construct (limiting your inheritance further)
Skulls can be buried alone but it is better than burying the skeleton alone in terms of gains. Lone skulls can still have large headstones
Destruction of a grave site would be a serious offense. Breaking a grave should cut the player's inherited stats by half of what they got until they repair the grave.
Destroying a grave should leave a desecration scent which can be used to summon 5 nignogs (the max you can summon) using the one scent if the grave that was destroyed was large. Smaller graves would still be punishable, but less nigs would appear from their scents, and less powerful. Say large grave scents are the strength of vandalism nignogs and medium is on par with theft. Small plaques would be the same as a normal scent, meaning 1 ghost per scent.
Grave destruction could be used to weaken your enemy before battle, so faction graveyards should be kept somewhere safe regardless of the negative affects given for destroying them
Graves should not be allowed to be placed on land that you do not own to avoid griefing gates and harvesting scents
Make death and ancestry feel fluid and real