Randy, if you happen to see this, I'm curious what the reason is, too. I'm guessing it's technical?
The LED-Wiz uses an OTP processor. It's not possible to dynamically alter device numbers without adding other hardware and/or major design changes, which would increase the cost. We build all of the GroovyGameGear interface products in our own facility, so we don't require the ability to change the ID's after the manufacturing process is complete.
Device numbers are only of consequence if more than one unit is being used on the same machine, and in that case, all that is required is that the customer orders a unique device number for each unit. If someone orders several of the same device numbers, and other items in the order indicate a possible issue, we often check with them to make sure they understand that each unit needs to have a unique address for the software to differentiate them. But as we don't know how they will be used, we can't know with any certainty that the customer has made an error, especially since we have a number of customers who buy them in quantities for use on as many different machines. To ask everyone who orders if they understand the function of the device numbers would be a blessing to those who don't, but a curse to those who do, as it will result in delays. But I will see if there is some verbiage which can be added to product description to emphasize the correct use of this option.
Regardless, we don't want people to be stuck when an ordering error has been made, so we always offer to exchange them for the proper units at only the cost of shipping.
RandyT