Your chances of getting an approval to operate within class B airspace is zero. I've had a request in for operating barely within a certain Class D airspace since day one, and they won't even address that either. I was on the UAS advisory board for the last 3 three years I worked at FAA HQ in Washington DC. We were the predecessors to the part 107 regs. I still know several people who work in DC in the UAS division and I can't get any approvals other than night operations, and operating from a boat. For taking aerial shots for real estate sales in sUAS restricted airspace, your only option is to do it illegally just like everyone else is doing (not everyone, but most). Personally, I cannot take the chance of operating anything other than by the book because I have a LOT to lose if I would get caught. I have not only sUAS license, but ATP, CFI and FAA Mechanic licenses that could be revoked. Really irritates me that they can't get their act together in DC but you have no idea how things work there and it's a very very dysfunctional family. CNN getting approval for operating over certain crowds was a very big deal, a very deep pocket lobby group too. The FAA has no desire to violate any one. They are just flexing their feathers to show they are addressing an issue the public has an interest in. If a "drone" ever hits an airplane, they(FAA) will have an out in that they will say, "the sUAS pilot was operating illegally".