The Rack management interface currently doesn't offer a drag and drop GUI for easy reordering and placement of devices on the Rack. I find the current system to be rather cumbersome to use and would love to see some improvements.
Another easy solution would be to not require me to link to a device and not require me to select a location. This will allow me to easily add the devices and then place them appropriately without needing to make cascading changes to all previous entries if a change is made.