in an apocalyptic game dead bodies should be present:

• on the ground (in cities/villages)
• in buildings
• on ships
• near crash car sites
• near water sources (maybe)

Also zombies could rise from these bodies (respawn).

Currently is not DayZ is DayPVP / KOS

players can play dead near these bodies in this case, which would be awesome.

Considering the amount of trees present on the map, a few bodies won't be that hard to render.