Banishment Dimension:

Banning your problematic friends from your minecraft world is to boring so why not send them to a different dimension and make them earn their place in the overworld again.

Features:

Adds them banishment dimension, a barren place with little to no life. 

(Spoilers for the dimension) 

The Grimm Forest: 

A dark and confusing place where the only thing that grows are the Grimm Trees, a new type of tree resistent to explosions and the cashew fruit, a not so great food source.

The Pando Forest:

It may appear like a normal forest but this connected fungi makes the whole place its own living organism. Its the one of the only places where you can find the Sporeling a tiny living spore that drops a item key to leaving the dimension.

The Dunes:

A white desert full of bones and carcasses. Its where you can find the Bone Lizards, a mob that walks in groups and sticks with eachother, they drop a key item to leaving the dimension.

The Meat Canyon:

A disturbing place that pulses with tendril and exploding pimples. Its where you can find the Orse, a agressive meat cousin to the Horse, it also drops a very important item to leaving the dimension.

Ores:

Gerite: The substitute for normal stone and dirt in the dimension, used to craft stone tools.
Leanite: A green stone used for crafting the Twisted Pedestal.
Trixite: A tuff variant of the dimension.
Starium: A glowing ore used as a base for crafting every important item.
Cryonium: A powerful ore used to craft higher level items.

How to Enter:

Craft a Echoing Star and with create a Ruined Netherite Sword and then upgrade it to The Banishing Blade.

How to leave:
(Spoilers)

Craft a Twisted Pedestal and right click with a Pure Star