akiko was too little too late. AGA had trouble competing with the SNES and it's mode 7 graphics.
The advantage of the Amiga was always the power of custom chips instead of using brute processing power.
The blitter in AGA was basically the same as the one they wire wrapped in the early 80's, that was their mistake. They could even have lived with bitplanes, because it's only cpu rendering which makes that beneficial.
Brian The Lion has "Mode 7" type effects.