Renaming USB device

[Peter Steele]

When a system has a USB drive present, the system typically names it /dev/da0. However, if the system has SATA drives hooked to an LSI controller, or if the system has SCSI drives, the same drive prefix is used as is for the USB drive. For our purposes, we'd like to separate the USB drive from the main hard drives as far as the drive prefix is concerned, for example something like /dev/usb0 would be ideal. I realize this is something that likely has to be done in the form of a kernel patch, but the question is can it be easily done?