So, after some thought and expirementation, I came up with a this human incinerator design. Basically what I do here is, I just wait for the enemies to fill my incinerator maze, throw a few moltovs at some corpses and wooden walls, block them off with stone walls and set the oven to 200 degrees Celsius.
You can watch all this in action right here https://www.youtube.com/watch?v=hY14qeWPCZ4
Also I am really interested in other designs, so I it would be awesome if anyone else have some designs and would post them.
Really cool idea! I'll have to try this out.... ::)