Here's my proposal for a rotating/tilting mount using the I-Opener's own stand, using the 4 torx (or whatever) screws, and not requiring a single hole or modification to the stock case: This may be difficult to explain, but I'm doing this before I try any construction, in order to get any input on possible problems.
Cut a piece of metal (1/16" should be ok) exactly the size of the I-Opener back mount(the plastic piece that says Netpliance).Using that back mount as a template drill the four holes, countersink them so the screws will sit flush. Drill a single hole in the center for the pivot bolt. Using a flathead machine bolt, countersink the hole on the inside of the plate, so this pivot bolt will sit flush.
Cut a piece of hardwood (3/4" thick) slightly larger than the back mount. In the center drill a single hole to match your pivot bolt. Bolt this metal plate you cut, and the piece of hardwood together, using a large nylon washer (thin) between the plate and the wood. A lock nut should be used, the nut on the wood side. This should tightened so the two pieces will pivot without too much force.
Screw this assembly to the I-Opener case back using your four stock screws (metal plate of course against the I-Opener case back). Using the I-Opener back mount again as a template, drill four small holes in the wood (not all the way through). Start four small flat head screws (not countersunk) in these holes. Then attach the whole I-Opener mount/base to the wood piece using four small screws. That's it.
The I-Opener will now pivot to vertical, by tilting it forward slightly(to clear the base during the pivot). There is only one problem to be solved: In the vertical position, the USB slot does not have quite enough clearence, for a cable to be inserted. A right angle USB cable (connected to your device, or hub), will be needed. (Maybe some other solution). Is there such a cable or adapter?
This mount should work fine, and look completely stock from the front. All the cables should clear in both orientations. Should there be any tendency to tip forward, some weight may need to be added to the stock base...but I don't think it will be needed.
Comments, improvments, flames, etc. accepted...The I-Opener looks and works well in the vertical position. I suggest a fan on the cpu because the air flow will be reduced in the vertical position.(Feel free to sell this on E-Bay)