Think of a small box with 5 or more eSATA ports. I know it would be messy, but I was wondering if someone could think of a good business reason for it.
How about an internal PC drobo? A PCIe card with 5 sata ports. Use the card for the drobo and the drives are powered by the computer.
How about partnering with Lian Li or some other computer case manufacturer and offering a drobo built into the case? Have a small door near the bottom of the case and the drives slide right into the case.
How about 2.5" drive drobo? How about a small drobo that fits in a 2 bay 5.25" space and the drives slide in vertically? 8 drives could easily fit and maybe 10.
Sure, some of these ideas are off the wall, but what do you think?