I'm so glad that this is a thing now! My first memories of MSFS was FS98, which was one of the few games which ran acceptably on our dated 531MHz Pentium 3 desktop. I remember getting FS2004 a few years after and I was never so simultaneously excited and disappointed to play it when our poor desktop could only sputter out 4-5FPS with all the settings turned down to the absolute minimum.

Years later when we upgraded to a more acceptable desktop, I spent hours of free time in middle school trawling simviation for the most absurd addons, including a Flying Hawk, a cruise ship, a space shuttle, and a BMW 760Li, because why not? My FS2004 install swelled from its initial 3GB to 12GB with all my addons. I've done a countless number of commercial flights and became a lot better at landings thanks to the FSPassengers mod which added some life to the barren FS2004 world, complete with options to serve your passengers drinks and listen to their screams when going stalling into a free-fall :)