I have a GoPro Hero 2, in its plastic housing the focusing and condernsation ar chronic. In a UKGermany housing the focus is better and the condensation is not a problem as there enough room to put in some cheap dessicant sachets. Unlike the gopro extortionate ones.
The ability to increase the battery life towards 6 hours would be handy as it saves opening up the housing every hour or so to change the battery.
I have met a couple of people who use go pros in ukGermany housings mounted on a sled / cradle with lighting to do sea bed surveys, they are a fraction of the cost of a pupose made drop camera thats good to 100m +
Looking forward to the Hugyfot finally coming together.