a gfx card turbocard combo has got to be possible. With modern tech out nowdays it'd be interesting to see what is possible.
A modern GFX and sound chip takes up less space than a m68060.should be amazing a turbo card with a 68k (or a fpga emulating one) and a gpu and sound chip with 256 MB ram and a pass through for Aga modes and paula sound that fit in the trap door