Products like the Shark have been around for some time now. Teron make one called the Micro Server that uses all the same chips as the A1/teron boards. I have seen these. The first Shark prototype I saw was nothing more then a Mac PCI card upgrade from Sonnet with a new cover on it. So if they figured out some drivers for these, the Teron even more so can just take over the Amiga and use it as a slave for the PCI slots and other hardware. All tgat would be used is the Mediator for PCI slots, any video, sound, TV, Ethernet card as well. Keep in mind they want to use one that has all this on the card too so that just makes the classic Amiga it on a real pricey tower and PSU. Here are several of them from another company selling now.
http://www.varisys.co.uk/powerpcproducts.html