1. best idea: Mouse pointer didn't move sluggishly on the screen. It was like the pointer belonged there. It was fun just to see the pointer moving on the screen smoothly.
2. best idea: Workbench. It was not what it should have been. AmigaOS3.9 or AmigaOS4 look with Dopus Magellan functionality should have been standard on AmigaOS3.1. Still it was so good that even today, it's fun and productive to use Workbench3.1 with several utilities to make it better.
3. best idea: Video Toaster and Flyer. It's a shame they sold it for too much money (as if an A4000 was cheap)(I know VT+Flyer was still much cheaper than professinal equipment but still, Amiga WAS a home computer.) and there was no PAL version.