I'm not against the idea by any means but it just doesn't seem all that needed at the moment since there are a few gameplay elements in place that allows the control of undead. It's likely best left until we see religion/culture more fleshed out so burial practices are much more important.
Suggestions are suggestions, no one is demanding a time constraint, nor do the existence of some ideas cancel out others.
It really only seems to be a problem in an evil biome where the dead reanimate. If you choose to live in an evil region then indecent burial and "gore-shoots" become a matter of survival.
Confining the dead to rest in tombs and such would carry the same weight of survival whilst retaining the ancient concept of bury the dead, or they will come back to eat you.
I suppose there's the idea that if the coffin was filled with an undead beastly that a likely grave robber would be quite surprised. Although it still seems strange a society would risk a zombie outbreak just to see a petty robber nommed.
Ok here goes.
Right now in places where the dead come back to life, burial is impossible. The corpse items inside come back to life and waltz out of their graves. Yet one could just as easily put them in a cage. Why this is possible with the cage but not the burial receptacle is a really peculiar thing. The gameplay elements that "allow for control of the undead" all end in their vaporization. There is no alternative. This would be one.