The problem with AGA was the needs of many users changed, and it wasn't just games. Web browsing became graphics heavy and we needed larger screens with thousands of colors to view web pages as intended at decent speed and without scrolling all the time, people wanted to use 24 bit image processors and 3D renderers with windowing environments. There were 24 bit boards before AGA came out for such reasons, but when I bought my A1200, i wasn't in to that software and couldn't afford the hardware-either on PC, MAc or Amiga. The A1200 let me upgrade as and when I could.
Looking back on it though I now realise my A1200 was never designed to run the software I now wanted to run. But the software that was designed for it, ran well: On a multiscan mnonitor, Workbench in 8 colors and DBLPAL overscan is a good approximation to 800x600 and very nippy, DPaint 5 and Brilliance 2 run great in DBLPAL modes in upto 256 colors, wordprocesssing/DTP is fine in 8-64 colors, Scala, CanDo, Amigavision are fine for AGA multimedia. But I now had Cinema 4D, ImageFx, Photogenics 5, Art Effect, Ibrowse, Mac emulators: all of these were transformed by my Cybervision board.
I tried to hang on to AGA on an A1200 for as long as I could and used umpteen patches to speed things along-and it frustrated me no end that I couldn't use my software to its full potential because of AGA's limitations.