Way Back Then

Legacy 4J (if you want to enable shaders or if you're annoyes with the movement mechanics, turn it off in the app), Controller Support, Sword Blocking Mechanic, Legacy Texture Pack, Limited World (2000x2000), and Legacy Tutorial Worlds. (You're welcome)

Gui Dark Mode (Can be switched on/off)

Player animation that doesn't change much (used in my previous modpack) (Data pack, so you can switch it on/off if you feel it ruins the nostalgic experience)

Mob animations (Also a data pack, so you can switch it on/off if you feel it ruins the nostalgic experience, it might be buggy with the eye animations if you turn the legacy texture pack on (Idk if it will/won't))

Shaders that suit the nostalgic feel

Subtle Effects (Also used in my previous modpack)

A certain horror mod for when we were kids and we fell for a trick on the internet (this is the only non-vanilla thing I've added, I thought it'd be cool to include it since its been here as long as console edition has.) (If you do not like it, you can disable it in the CurseForge app)

The image quality is 2015x2015, I did this on purpose.

2015 was when Legacy Minecraft was at it's peak, this is when everyone was playing it, and everyone remembers what it was like at this time so vividly that it brings nostalgia at the mention of it. 

Remembering when they were a kid, on their Xbox 360, playing Minecraft Xbox 360 Edition.

This modpack is not just for nostalgia, but in memory Minecraft Xbox 360 Edition and other console editions since the store for Xbox 360 was shut down in 2018 and Mojang stopped making different versions of Minecraft for consoles.