All my dive gear works fine... although it would be nice to have a James Bond style pencil-sized rebreather that allowed me to dive to depths of 300 ft for several hours.
However, what I really need is an UW video housing which offers full control (via LANC) of all the functions on my HC-7 HD camcorder, is certified to 500 ft (just for a good safety margin), has built in HID lights, a good monitor, and comes in at under $100 retail. Alternately, someone could invent a generous human being who would completely fund all my educational ventures... and look beautiful in neoprene as well.