Why hadn%&$#?@!%&$#?@!%&$#?@!8217;t anyone succesufuly been able to clone AGA gfx and just gone straight to 16 & 24 bit!
Because there is no OS support for 16/24 bit AGA.
People see that they can emulate one of the dumb PC graphics chips that were used on RTG cards and get software support for free.
Adding a chunky 8 bit indexed mode and 16 bit direct colour to minimig AGA would be relatively easy. 8 bit indexed (AKA chunky) would run in the same bandwidth as AGA 8 bitplanes, you'd need double the bandwidth for 16 bit direct. So if bandwidth was limited then you could restrict the resolution, but as the data is sequential then you could likely burst it as modern ram has huge rows.
It would be awesome for texture mapping.