It would have made more sense to release it as an A500+ and make it an A600 motherboard in an A1200 case.
The AGA chipset was largely ignored by the software houses and even by Commodore themselves
Only real drawbacks of the A600 design (apart from the stupid small case!) was opting for an expensive 2.5 inch HD, a 3.5 inch would have fitted in the A1200 case.
So an A600 MB, with 3.5 inch HD support, an A1200 style accelerator card slot and an Amber chip sitting in an A1200 case would have been pretty cool circa 1990