I am considering a project of my own, making an accelerator for A1200 with an ARM CPU running software emulation. What is the point of that? Well lots of people are doing it with FPGAs but it would seem cheaper, faster and easier to do it this way as there are software emu's already available, ARM chips come in the GHz range already and are widely available (and the logical next step for desktop PCs in general if you ask me) and affordable. The software would be in ROM on the card itself so you wouldn't know it was there. Why not just emulate the whole Amiga on a PC? Well because then you have to host the emulator in some other OS you have to boot up, ugh. And it doesn't feel the same.
i proposed something of the like all along. if you do that, be my heroine. if not join aros68k project to massively upgrade amiga experience!