The C-Head is not just a toilet but a waste management system, not to doll it up too much. The toilet is a moldering toilet that will hold 10-15 uses before the waste must be transferred to a common five gallon bucket (called the "disposable bucket") where it continues to compost and molder until it is full and discarded or else moved to a composting system on land. The disposable bucket will take 5-6 transferes before it is full. That means it will normally take a couple 5-6 weeks to fill it up, giving the system a one month plus capacity using less space than a holding tank system or the current composting toilets.
If you use the other currently available composting toilet systems as they were designed, that is you purchase a second (or more likely a third) collection container so that the waste can continue to compost, and dispose of it only after it is completely composted, then you will be using more space than the C-Head system does by far. If you don't use the second collection container, then you are discarding waste that is not fully composted. In fact it is less than half composted and some of it is not composted at all, being only a day or two old. At the very least, this waste should be discarded in a sealed rigid container instead of a plastic bag.
The fly issue is definitely regional. Some areas have it and some don't. But flies lay their eggs in moist fermenting waste. If you dry the waste, it reduces the incidents of fly infestation where they occur. Toilets that compost fully need moisture to work. Moldering toilets that (while the material does compost, but at a slower pace) do not need moisture since they are placing the waste in a state of inactivity until it can be further composted or discarded. It make little since to compost waste that you are going to discard. It is safer and easier to dehydrate it.
As far as using the waste as a missle to defend you territory in an area rife with wind generators, my guess is that the poop would really hit the fan! What I am looking for is a true minimalist, who could dry the fecal geodes in the sun and use them as briquettes in his stove. Now that's hardcore!
S/v Lily Pad