Acutiator was the codename for a next-gen Amiga - a proper revolutionary change to the Amiga hardware, not the tiny alterations like ECS and AGA, Acutiator was meant to provide a modular architecture upon which they could build any different kind of computer for different markets simply by adding in or taking away chunks of the modular design. It was designed with the AAA chipset in mind but could take AGA aswell if a low cost design was needed.
Commodore never really wanted to push Amiga to their 8-bit customers because they seemed to believe that the 8-bit market would just stay alive hence the C128, C128D, C64C, C64G, C128DCR, C128CR, C64GS and so on. I agree that the purchase of Amiga should have been the death for the entire 8-bit line and they should have pushed the Amiga to their existing 8-bit customers. But there are many, worse mistakes that Commodore made than that.