This must also go on my wishlist for the replacement of the 20D: a wireless flash controller for the current range of TTL II flash units. With a single on-camera flash and a wireless unit that can be positioned independantly and with complete control of its output, terrific lighting effects can be achieved (especially for small and close subjects). This is alongside a 10-12MP sensor, weathersealing, dedicated MLU, larger and brighter LCD screen, extended ISO (lower and higher), and auto sensor cleaning...Gee, what a camera!
All the best,
There's a long way to the elusive "perfect" camera but I don't understand Canon on that feature, other brands allow triggering slave units from the built-in flash. Oh well, I guess it's just another trick to sell the ST-E2 transmitter...