While for the past 10 years SATA has been a big improvement over IDE, I feel it's time to start looking at smaller more pliable cabling/connectors. Maybe getting down to the size of roughly an individual head phone wire with a micro-usb sized connector. SATA cables don't actually pass much current, right? So, the gauge of the wiring is pretty trivial, you just need to pass the digital signal to the HD controller. MicroSATA perhaps?
