AGA has the best TV output I've seen on any PC. People don't get this cause they use compositte, but use an RGB connection and you'll see the difference, it's completely sharp without color bluring.
Advantages?! Well, I'm not an enginneer but if it can be updated like some of you guys mentioned so be it!! This is why I think it'd be worthy:
AAA would maintain the scena alive, and allow some functions like the so much appreciated screen dragging function.
Also it comes to a point where the hardware already does almost everything you need.
I can see the other point of view, but will the scene continue without those hardware banging cool copper lists, that some coders like so much ?