More will be revealed, but why not build what is supposed to be a "final" resting place? I write "supposed" because its overseer and sometime occupant is going to be a John Jenkins Chinese mummy in a jade suit that I had bought off of somebody a few years ago. Clearly, the rest of the undead may not actually be "final."
As the main use would be in pulp gaming as per Pulp Alley, perhaps set in Ancient China, it ought to have a layout that would be tactically interesting, so it may diverge somewhat from the typical Han Dynasty barrel-vaulted cross shape or the earlier pit with a ramp. Perhaps, there may be tomb robbers' tunnels, portals to the afterlife, or other such features. There may or may not be a second, corresponding piece for above ground, with a stepped mound, enclosure, and/or sacrificial altar.
Besides the (hopefully resting) owner, mostly for scale, there may be an undead chariot burial and/or terrorcotta tomb guardians. Although there should not be so much clutter that gaming would be hindered, there may be a few pieces of "scatter" terrain such as bronze vessels and a sarcophagus...
Anyway, that's the general idea, but we shall see whether my rusty modelling skills and available time will make it possible...