I've often wondered why no one bothered making an x86 version of the PPC Amiga accelerators. Same concept, different CPU. 680x0 + x86. Call the new multi-tasking kernel "Warp86". :idea:
I'd be all for a PCI card with FPGA custom chips as well, designed for use with WinUAE in a similar fashion to Catweasel (perhaps even incorporating it). This way UAE controls the environment and CPU emulation, but lets the hardware functions be passed to, well, hardware.