Some more information for you.
I'm a professional photographer and I make most of my money in the real estate market. I added aerial photography to my options and have gotten some work from it, though nowhere near the amount I've spent on it.
Now, a little about real estate economics.
A Redfin study showed that professional photographs will increase the sale value of a home by between $3,000 and $11,000. Let's take the upper number. A house sells for an extra $11,000 more than it would have, meaning an extra $660 in commission. The commission has to be split with the buyer's agent, so it's down to $330. Now the realtor has to split that with their brokerage house (unless they're the managing broker) so their delta commission is down to $165. From their perspective it doesn't pencil out on a commision basis.
It does help when it comes to getting a listing. If the realtor can tell a prospective seller that they use a pro photographer and will get more to the bottom line the seller is more likely to go with that realtor.
It also helps in time to sell. Professionally photographed houses sell on average 21 days faster than amateur photos. This is a selling point for the realtor to get a listing, and the realtor likes the faster turn.
On the topic of great new ways to show houses. You have to do your market research to determine if what you want to offer is going to be worth it. I've heard from lots of people how aerial photography will be great but the number of houses which benefit from it are not that common, unless you live in an area with spectacular homes and views. But when it comes to spending money to get it well the interest level goes down.
And very important! People are moving more and more to mobile platforms. How well would the 3D images work on mobile from an end user experience on a small-format screen? If it's not a good user experience then they just get frustrated and move on.
Seriously, I'm not trying to talk you out of it, unless you live in the south Puget Sound, in which case you need to run away as fast as you can
Before spending anything on this you need to do market research. It's a great idea, but so was new Coke.