'While they might be preferrable in 64x64 sizes to some of us'
Or more bigger... I would love it! I mean, there are many really nice looking flat icon sets which are available in biger size. (256x256, ...) It could be really nice to have such big icons in Ambient. I know there is a mode (can't remember the name) on MOS which allows the old kind of working, but disables some modern features. It could be really good to have a modern desktop with unlimited icon size.