Multiworld mod

So this is the mod that i am making with a few friends here is the decription of what it wll have, if u have any suggestions let me know, we aim to please
ASSASSINS CREED WORLD
- Hookblade
- Default hand will have a hidden blade
- Haybale items that will break your fall
- Gun that can be used with the hidden blade in synch
- more mobs like rifleman, assassins, brutes lightguards and much more
- horses that are rideable
- a lot of naturally spawning npc's
- more armor like the armor of altair and the master assassin armor
- ziplines
- rope item that can be used to make ziplines
- data fragment item
- poison dart firer that works with the hidden blade
- extra bar in the inventory menu for weapons (only includes hiddenblade, gun, poison)
- rifle
- apple of eden
- smoke/caltrop/tripwire bombs
- da vinci's parachute
- grapple hook, i know its not in assassins creed but i think its a good idea
- lifts
- statues of assassins
- daggers
- crossbows
WAR ZONE WORLD
- naturally spawning enemy npcs
- ar-15s and ak47
- default hand will have a pistol
- naturally spawning structures that function as bases
- grenades
- cars and planes
- bullets
-bulletproof vest
HEAVEN WORLD
- it really pissed me off that notch never added the sky realm so we are going to add it
- basically everything is just shiny and gold, we will add more ores that you can find in the heaven realm to craft armor
- will be right above regular world