Hype on its own makes a noble attempt at 3-D, accounting for relative vanishing point and such. My first attempt was a darkroom look with photos clothes-pinned to a curved horizontal string. Move the mouse across to make individual photos swing, compounded by having the string swing very slightly. The perspective was not perfect but after taming the action a bit, it looked great.
For many, the best solution is to create the 3D elsewhere and bring it in as a video. Along those lines, one thing that might bea nice addition to Hype would be to emulate what Flash can do in embedding a video, which makes it easy to control the video various actions (such as a seamless loop that can also be used as a transition.