>I love the aesthetics of that era so much: Efficient usage of screen space, clear borders between different elements - brings back happy memories!

the GUI design of this era was really something else, its hard to describe but the UIs felt so discoverable, the basic core features were presented up front and easy to use, intermediate features could be found in widgets surrounding the core UI, and a whole set of advanced features within the menus once you've mastered your surroundings. It's as if the UIs of the time were designed to create an efficient learning path, at the expense of some information overload when first using the application.