Currently "burying" simply makes a (butchered?) corpse disappear. However, the terrain/surface where it's buried should be affected. If it's farmed/grass tile, it should become 'packed'. If it's rock or road, it should not be allowed (destroy the pavement first). And there should be some small exp gained, probably 'digging' and/or 'paving'. Maybe even create a tile-surface that is a burial mound, with time it could revert to 'dirt'. 'Burning' dead bodies is another form of corpse dispensing. It could be a subskill of 'firemaking', with a new 'furnace' creation: 'funeral pyre'. 'Mummification' and burial in mounds/pyramids is another idea, but this needs new models, both for items and buildings, and maybe a new skill.