Just as title says, I would like to replace all the broken workstations at the Traders with a copy that takes dukes as fuel (eg coin operated). 1 Duke for 1 second of time seems right.
Not 100% sure so maybe someone else can chime in but since the destroyed workstations are essentially a block which appear all throughout the map (not just at the traders) you could do it like this:
1. Create a new block, which is essentially a copy&paste of the desired workstation
2. Edit the trader prefabs and replace all destroyed workstation with the coin operated versions
You would also need to make Casino Coins a fuel source, by appending items.xml, 'casinoCoin' item:
<property name="FuelValue" value="1"/>
However, this might throw up problems - for example, you would be able to use casino coins as you would other items with a 'FuelValue' property. Interestingly 'OldCash' has a FuelValue property