Not a bad idea. Except how do we know whats being built or which inventory model is newer than other (VIN is unreliable right cuz the order of VIN is based on time of order and not time of production)?
If they put the car in your MyTesla to swap for your new order, perhaps you can select the car and then view the source to see what options are present for it? They did that for me when they were trying to get me to accept the NI car but at that time I didn't know how to look at the options so I'm not sure if that works. If there is any way within Tesla's system to use the VIN to view the car the same way their new and used inventory system works, that might also work....
Of course you could also just ask your DS or OA what option codes the car has... I saved all my option codes when my car was confirmed and check every once in a while, which is how I found out that the AP option changed from APH2 to APH3 recently...