Yes my statements were presumptions, but also based on the theory that when something new is being tested and implemented, especially along the lines of this scope and based on unparalled information technology,there is always room for error, hackers and those preying on the system.
While the bands may not "appear" to be re-assigned to another person once used who can say for sure they cannot. There is a place in MM+ to put a band number in and attach it to your profile. Theoretically a person selling FP+ spots could be a passholder, get a band and attach it to their profile for every day of the year and sell them. Now I am not sure how many bands a day would be allowed but just one a day might be enough to make good $$ and would be underminig the system and fill it with FP+ that others may not have taken the time to do. As an example, it "appears" that my family cannot use each others ticket/band to gain entry into the parks because of the biometrics system, but we try to see if this works and we can always get in with a ticket other than our own. It just doesn't work all the time as it "appears" it should.
Why can't a person secure unused ticket media and attach them to a band or profile and re-sell? It is not right, but it is happening all the time around Orlando now with the regular tickets. It will make it more difficult, but if it is lucrative crooks and scammers won't think twice about the extra effort to make some $$ and mess with the system and extend wait times. I think that ghost reservations to secure bands, and dummy profiles will be a big problem for MM+. Things that can be traced, yes, but still a wrench in the system for Disney and very costly, which costs the endline consumers in the long run.
I guess what I am saying is that where there is a will, there will always be a way to try to scam the system. It sucks, but it is true.