Thanks you very much for the detailed feedback. It sounds like you have all the toys.
We haven't had the opportunity to test the Pro with all the lenses so we can't speak to the tradeoffs and are relying on the math to be correct in order for the overlap to work out properly. We know the 15mm is an asphere so there is already likely going to be a bit of interesting spacing going on.
Going down this path with the Pro is quickly complicating our interface with all the options.
We are trying to pull an autofocus on the center of the image AFTER every image is taken (one before the first one). I guess since the focus is being determined while moving it could be causing some weirdness. We might need to stop and get a focus value before starting but then it won't likely apply to images taken changing terrain.
We highly recommend using Automatic mode for the exposure when there is plenty of light and Shutter Priority mode when you are short on light. We will not likely be adding an Aperture priority mode. If all these modes start confusing people we are more likely to take the additional ones out than add more...
In our experience, playing with the aperture shouldn't really come in to play when mapping up high but it seems that you are operating super close to ground where it might actually matter.
We will not likely be adding a raw readout option either since they take a much longer time to read out and cause large variations in the camera framing availability time.