This mod is nuts. It perfectly encapsulates the feeling of the legacy editions with just a few minor flaws. I will say though, the world gen you saw at the beginning is definitely not legacy world gen. I've seen world gen like that in modern Minecraft, but never anything similar in the legacy editions. Though that might be because I played on the Wii U version which is equivalent if not a bit worse than the Xbox 360 edition.
Thank you for creating this video, it has since inspired me to possibly absolutely destroy my MacBook Pro just for some pretty little Minecraft Gameplay. Thanks again.
The "Reviewing minecraft shaders like it's 2013" title, followed by one of the most obnoxiously fast-paced attention span catering intros I've seen in a while, was _not_ what I was expecting.