The Nether and The End should have more structures

The Nether and End have few structures and I think they should have more for it to be more challenging (or easy)

An example is: A Nether/End Village populated by: Pillagers and it should have VERY good loot

Another example is: An End library with enchanted books that could be found only in BIG End Cities

Or maybe a Nether bunker that spawns in A NEW TYPE OF NETHER FOREST

Beacuse I find that the Nether and End are kind of boring...