Well, having used the drone a few more times now, I've learned a bit and thought I'd offer up my findings.
1. Batteries, Batteries, Batteries, Batteries. Get as many as you can afford and get a way to charge them in the field. I now have 4 batteries for a total of 2 hours of flight time. There are few things more frustrating than having a fantastic shot lined up and have no batteries to fly with. Especially on an expedition, you never know what vista will open up before you around the next bend. Also, beware of the cold as the batteries won't work as well. If it's really cold, heat them up in your windshield defrost before you put them in.
2. Beware of your location - This last weekend, I was filming a river crossing in a narrow valley with lots of trees. As I was entering the water with the drone above, for whatever reason, it reverted to its "return to home" feature. However, I suspect because GPS was patchy, it thought "home" was in the middle of the river. So it "landed" (watered?) in the middle of the river and became a submarine. To its credit, I dried it out and it appears to function still. But know your craft and learn to recognize when $h1t is headed south. If I had realized what was going on, I could have caught it before it hit the water.
3. Memory cards - Be sure to get the recommended card for your camera. For the Chroma, for it to function reliably, you need to have a FAT32 formatted Class 10 card. which means a limit of 32 GB. It's tempting to get the 64GB or larger, but those are formatted EXFAT and will frequently fail.
4. Be slow and smooth - If you're filming a shot and you think you're going slow, go even slower, especially when turning the camera. It can be painful at times to move slowly especially if you're filming something that happens quickly. I've thrown away a lot of footage now because I was moving far too fast. You can always speed it up without affecting quality, but you can't slow it down without it getting choppy.
5. One or two movements at a time - Similar to #4, it can get very distracting if you're doing multiple movements. Simple deliberate movements are much more effective and focus the viewers attention on the subject rather than the camera. Especially beware of spins. The drones move relatively slow side to side, but when you spin it's very noticeable and your field of view changes quickly.
6. Follow Through - Complete your shot. For instance, this weekend, as I was filming the water crossing, I got a fantastic straight down pull up shot looking into the sunroof of one of the landcruisers. However, I left the subject as he was climbing the other bank. It's still a usable shot, but it would have been much more useful if I had stuck with him until he was completely clear of the water.
7. Choreograph and Direct - Even for things that are supposed to be candid, at the very least, hold someone up (say from crossing a river) until you're in position, and you've practiced the camera move at least once.
9. Be deliberate in your filming - I've been out several times with it on trips; a few with the intent of "Adventure first and film where possible along the way." And the rest "We're here to film an adventure." If you want really great footage, you have to work for it and be willing to stop and take it out spend 5 minutes getting it set up, 5-10 minutes composing the shot, 5-10 minutes shooting/reshooting, 5-10 minutes putting everything back away. If you're going to be adding time to the trip in 30 minute chunks, everyone who is on the trip with you needs to be in agreement that you're there to film, otherwise they'll get frustrated at the delays because they just want to get to camp.
10. Have a Vision - The best footage I've ever gotten has come from having a shot in mind. Whether it be a straight down traverse over trees with a tilt up to reveal a snow capped mountain range, or a strafing tracking shot of a vehicle with a spin around the front and pedestal up to see a large rock outcrop in the desert as the vehicle fades off into the distance. You can start to have your visions by doing several things: listen to soundtrack music, watch national geographic videos, watch Expedition Overland, 4xOverland, Chelsea and Tony Northrup, DSLR Guide, and Richard Michalak's "Cinematography Learn From a Master" on youtube. But most importantly, pay attention to what the camera is doing, see how they set the shot up and captured the moment. Sometimes it won't be perfect, but you'll have the concept in mind and a subject will present itself. The shot above traversing over a forest looking down with a pan up to reveal snow capped mountains, started in my head as a close up traverse over open water with a pan up to reveal a tall tree line at the edge of the lake with a rise to just clear the top of the trees and reveal the snow capped mountains set to occur at the emotional climax of an epic orchestral score (in this case Magnificent Journey by Sound Adventures). I couldn't get an angle that worked for that despite looking all weekend, but when I came around the bend at Santiam Pass in the late afternoon heading home, the new shot just presented itself, and it is by far the best footage, to my mind, that I've ever gotten.
Anyways, that's what I've got for now. More to come as I get better, specifically better at not crashing it into the river.