[GeeTwo]

That's a lot going on in a little space; very impressive, especially if it works.
The CAD or at least a few renders from other angles would be helpful to understand it all, but let's see how much I can get it from the one render:

• Is there a second pancake (or other) cylinder hiding under those CIMs, probably coaxial with the drive shaft that accomplishes the drive train shifing, or is the cylinder on top some sort of 3-state device?
• Where is the PTO output located? I understand it's linked to the ring gear, so the most obvious place would be behind the drive shaft, where I thought the shifting cylinder would be located. Doing this would not only move the shifter out of the obvious place, but it would be difficult to pass all the different coaxial shafts through the large gear, so I'm guessing that the annular gear has teeth on both the inside and outside of the annulus, and the PTO is another spur gear that takes off of that. Doing bevels would require a lot of extra work and thrust bearings for no discernible benefit.
• If I understand this right, the PTO output would have to have the shifter in high speed/low torque (single stage) mode, and the carrier is locked, so the output gear ratio would be (64 / 11) * (72 / 30) = 14.0:1 at the ring gear, possibly higher or lower if the PTO is not directly taken from the ring gear.