Yup, auger up bottom feeder and the slip up cone as air manifold. ( give that man a sigar )
lightning port going to be just above the nozzle in the cone.
the glowing charcoal will be on top of the set
fire tube will be on top of the cone with nozzle ring(s) to provide air in the reduction zone, ( ending up with blowing the smoke trough a stack of glowing char )
goal is to create/maintain a large reduction zone, after testing that tube part can be made of ceramic.
Air entry from the bottom upwards, gas outlet from the top thru the glowing charbed.
Picture a dome over the set to catch the gas.
No preheating of the incoming air but preheating the fuel.