They need to ditch coin mechs and doors and that will save $500 straight away....

Exactly!

It would be cool to see a couple of versions for each machine.
For example:
The stock standard pin for the operators, a basic home use only pin like you mentioned with out the coin mechs etc to save a few dollars and maybe a deluxe model for those collectors that want a little something extra.
Stern sells more 'cause the basic model is slightly cheaper and they can make a few more dollars on the deluxe editions made to order.