Fair enough, no doubt there are a boat load of opinions about the way into the future for such a beloved place as WDW.
We used the MB last month for the first time and we thought it was a great improvement to the previous way things were done at WDW. The MBs were used for FP, room keys, DDP, park tickets and forms of payment, not once was there an issue. They worked perfectly for all 5 of us.
I also think the parks looked great, we hit all four multiple times the week we were there and used all forms of Disney transportation. Everything ran on time and was clean, and with the exception of one jerk at Epcot all the CMs were great as well.
Seeing the new construction at DTD, AK and the Poly was cool as well. I am excited to see the outcome of those projects over the next few years.
Most of the feed back I see regarding MB from folks who have used them is on this forum, I would guess that is different from the "average" guest at WDW who most likely is not cruising Disney forums. I wonder what their view on MB is.