Revive The Nether

With the addition of happy ghasts, the icy nether theory (the nether was different and cold with water like an ice age) is supported as lore, I suggest creating the implication of a block essential to the nether which was lost that players have to find in order to revive the nether and make it an ice age again, where all dried ghasts can become ghastlings, zombified piglins can become normal, changes to enviornment and much more, make this optional but has lore