I built a little box for CEM and trim, I'd love a Spitfire stick to go with it and only the fire button would be needed for me. The problem with making these things as it's very labour intensive when comparing to a injection moulded piece of...
Unfortunately for most people that will make the cost prohibative. There was a company making proper spitfire simulator controls but I think the chap in charge passed away. They were very expensive though.
I don't claim it's realistic... just better than a keyboard.