They don’t build VINs in exact order. Your Tesla rep can tell you the build date of a specific VIN. Anything within the last few weeks to newer are pretty good. It looks like Tesla had a rough patch for 2 weeks after reopening the factory. If it’s the car you want, go see it. Most issues can be corrected fine, major stuff may justify passing on the vehicle. Tesla is pretty good about it if you reject for a legitimate reason. I know the guys at my local SC are doing their best to be proactive on any issues they see coming in and try to correct stuff if they need to, even if it means rescheduling delivery. They're doing a pretty good job of cleaning the cars before delivery. It seems some locations are not and are unloading them from the transport, pulling off the plastic wrap then handing them to customers as is.
If the MVPA disappeared, it could be for a variety of reasons. They could be assigning a different car or addressing issues with the one first assigned to you. All things the delivery advisor should be able to tell. Best advice is to go see the car and if it's not to your liking, tell them to try again.