Good stuff here, but I'd add the fact they didn't do anything to upgrade Paula. Clearly by the A3000's time, that should have morphed into a 16-bit or higher Hi-Fi chip that was backwards compatible.
And the fact that since the A3000, they were still confused about how to market AND didn't really have a pulse on who wanted to purchase what Amiga model. Too many Amiga's competing with each other and all were severely crippled hardware wise by the lack of Fast Ram, better processors, 15khz video, etc.
No affordable AGA upgrade path for old Amiga's too, "forced" us to re-purchase inferior products in order to 'keep up'.
Zip chip implementation in A3000.
Constantly rushed products which always forced us to purchase more and more accessories, peripherals, Kickstarts, Busters, Agnus's, RAM, etc. The Amiga really has always been somewhat of a money pit/experimental hobbyists type of computer - hasn't it? lol