USB 3 and eSATA would be a waste right now since the vast majority of systems out there right now don't have either.
This device is designed for the "repairman" type use, not the "hook it up to a Netbook" type use. Though hooking up a DVD drive through a $40 multi-used device deserves a "Frugal Computing" award since it is cheaper than buying a new USB DVD drive. Many of us have an old DVD drive lying around already or you can buy one used for a few bucks.
When I checked Newegg this morning they didn't have this product. I sent an e-mail suggesting they carry it. Can't wait to pick one up for less than the $40 MSRP which IMHO is reasonable. This device may not have been released in the US yet.
What is new about this device is that it handles BOTH drives AND cards AND has extra USB ports.
If you've never checked out Scythe's product line do so. I just spotted this interesting item:
http://www.scythe-usa.com/product/acc/069/sda1100_detail.html
It is an amplifier that fits into a bay on your case. They also have speakers that fit into bays in your case. And a drawer. And fan controllers.
I'm not into gaming so all this stuff is new to me. It is amazing what is out there.