I had several buddies with a Leo II & II housings.
These hounsing are (were) spartan and rigged at the same time. My buddy in seven years changed Nikon D100, D200, D300 and D7100. The housing it's always the same. He upgraded just the control board for less than 200USD.
Regardless of liking or not Easydive housing, still after a lot of years it's the only company who went for this route. It's really strange because remote control interface for Canon and Nikon camera are well known. It's a mystery to me.
For the Wi-Fi version my only fear would be camera battery duration in this mode....