I was creating a graveyard for my legacy and was wondering if there was a way to change the death the buydebug tombstones have on them. If you have testingcheatsenabled true you can Ctrl+Shift click a tombstone and you get a few options. One of the options is to change the death type of the tombstone. Once that tab is clicked, a list of all the deaths available (depending on expansion packs owned) comes up and you can click anyone. This changes the death on the tombstone.
I hope this may help others when creating graveyards or for other purposes.