The main change to dingoo would be a proper protection to lcd screen, some cellphone-like hard plastic on top of it works...
because the current case is soooooo fragile =(
About Wi-Fi AND Bluetooth at the same time, I donīt think it is necessary, because it would raise the price.
If them put Wifi OR Bt, would be better, Dingoo really needs multiplayer. (and of course, this could potentially double the dingoo2 sales)