Quoted from phil-lee:If it was done properly the value would stay the same or increase in my opinion.
It is too bad some machines had an opportunity for a spinner but those who designed the game decided not to use one for whatever reason, so it is what it is. If you modified the machine to the extent you are talking the Value would definitely decrease, as originality would be gone, along with balanced scoring, schematic issues, etc, etc. I would not buy a machine that has been modified to that extent. Just my 2 cents. 
