So thanks to all the great information around I've decided to build me a min wsm. I'm way early in the process after reading a bunch. The only piece I have so far is an imusa pot (not even an sj yet). Anyways I keep reading that it's almost more than optional- more like highly recommended to make a charcoal basket with expanded wire. However I'm not sure I understand the reasoning. Why is this part so important? It seems that without it you would be able to fit more fuel for longer smokes. I know I'm missing something but just not sure what.