I came back to thread when I was notified Nic replied and I see what I thought was a comment I made earlier this morning not posted to the thread. I guess it's sitting unsubmitted on my ipad at home.
My comment had to do with the display window in your video. I'm not sure I'd look at (approx) a 300 mi x 175 mi area like the screen covers and try to find caches. For me, I'd say a 25x25 square mile area is probably the absolute biggest I'd look at on a cachly screen. Maybe others have a *need* to see all of a country like in the video but I definitely don't. I don't see myself needing to see an entire US state at one time. But if there is a need or a viable solution could allow for it, then great. If not, maybe a smaller coverage area should be the target to come up with the best solution?