a anniversary update with Old world gen as a biome

we are in 2019 the and the 10th anniversary of the first appearence of minecraft is coming so adding a very rare biome where old generation from alpha/beta gets back into minecraft so i will divide the ideas in sections so i think that a special update is needed

WORLD GEN.

*(optional)a beta based version will be added too the diferences will be plants and leaves color as well as biome diferentiation based on beta too

*old terrain generation returns exclusively for this very rare biome

*its conformed by 5 variations: Alands,Adesert,Aforest,Atundra and Aocean(WIP names)

*despite being super rare they are going to be huge

*water on this biome and its variations will have the old water color

*(optional)old cave generation returns as well

*villages,mineshafts,ravines,desert temples,igloos and other small structures does not generates with the only exeption of strongholds

*dungeons will generate with a old textured spawner with the old loot in chests as well

*caves will only generate stone

MOBS

*there is not going to spawn any of the actual mobs instead they are going to spawn with a variant

*these variants will have their old texture,sounds,drops and AI

*(optional)these mobs will deal more damage than the new actual ones

*(optional)these mobs will not drop experience

*(optional) husks and strays will be funny to see on this way but they will drop the same items as the their normal counterparts a.k.a. oldskeleton and oldzombie

*endermans,witches,baby zombies and villager zombies will not spawn there

*animals will have their respective variants

*just like hostile ones they will only give their old drops

*pigmans or endermans will not receibe the old behavior(because of problems with dimentios)

BLOCKS

*all the terrain with the exeption of grass,dirt,water and lava will generate with new/old blocks

*caves will use a old version of stone that will drop a old version of cobblestone unless you use silk touch

*trees will have their own variaton that implies new/old wood,leaves and planks

*these blocks will have the old texture

*(optional)the old trees leaves will drop a legacy apple(WIP name)

*ores will have a variation with old textures too

*petrified wood can be obtained via old wood and old stone

EXCLUSIVE FEATURES

*(super optional) all the blocks that are on this biome will not gets affected by ambient occlusion to simulate the lack of smooth lighting of those versions

*legacy apples can be crafted with gold that will give a special golden apple that allow players to fully regenarte their health but it does not gives saturarion just like a instant health potion but in level 5

*(if possible) light on this biome is not colored

*certain blocks are harder to break just like the old versions but they can be affected by haste an efficiency

*(optionally)old wood boats will float instead of sink just like the old versions

RANDOM ADDITIONS

*naming a mob "10th Alpha or Beta"will make that mob to adapt the old behavior of his old counterpart

*(optional)petrified slabs,stairs and fences can't be waterlogged

*small chance for normal creepers to use old explosion particles instead of the new ones

THE END

i know that there is a lot of features but hey 10 years are worth for it also this will help newer player that comens on bedrock to know how the original minecraft used to be