Some other ways to clean up the inside of the case are to replace flat with round cables, and to get only the length of cable that you need.
www.svc.com has a great selection, and does not try to ream you on shipping like most places. Replacing an 18" dual device flat floppy cable with a 10" single device round floppy cable gets rid of all sorts of mess. I just wish there was something shorter than 10" available, as my floppy controller is only about 4" from the connector to my FD.
I also have onboard RAID and use a separate 10" single device cable for each of the two HDs, while an 18" dual device goes up top to the DVD and burner.