Features Summary - psygreg/vanilla-max-minecraft GitHub Wiki
One-click multiplayer with proximity-based voice chat!
Airships and aircraft that can be crafted comprehensibly through the crafting table and have intuitive controls
Ships - you no longer will be able to traverse oceans with simple boats though!
Carts for you to transport stuff on land by yourself or with a friendly help from horses, mules, donkeys or camels
Backpacks and sleeping bags to enable you to explore further away from home without fear of going back to spawn or filling your inventory
New possibilities to redstone with Gears, Relays, Displays, Copper Hoppers, Pipes and much more!
Vinery and winemaking
Several new mobs - passive and hostile - including the ones that lost all mob votes!
Lots of new food
New cooking system for more complex recipes
Many new crops
Improved fishing and various new kinds of fish
Trinkets with some pretty interesting effects
Several new small and larger structures
Many revamped structures from vanilla
Revamped Minecarts that can be linked and go much faster
Elytra has a trinket slot instead of taking up the chest slot
Revamped archeology - and a new villager job with it!
Cameras and photography!
Guard villagers that can assist the player during raids and zombie attacks - and also attack misbehaving players
Gunpowder weaponry: cannons for land, ships and airships, as well as flintlock guns - but they can also be in Pillager's and (rarely) Skeleton's hands!
Completely revamped End and Nether dimensions
Backported wolves, tuff building blocks, crafter and bundles from 1.21
Copper hoppers and pipes for better storage arrays and redstone machinery