It is long overdue for a Nether Overhaul, but until we eventually get it officially, you can use this add-on. Explore a completely new Nether, even though it is made of almost the same blocks. The density of some areas and biomes has been severely increased to create a supreme atmosphere of desperation. But the changes don't end here. Some new blocks, flora, and fauna will also spawn in the Nether. All of these changes combined make for a big enough difference for the dimension to feel fresh.
Credits: kanadeyoru1