Mini Nether and Overworld biomes in the End

Once the nether update comes out the End will be the least diverse dimension if it isn't already. Making new biomes for the End would be cool but also time-consuming and possibly unnecessary. Endermen are notorious for picking blocks up but why would they spend the energy to do so? To me, they pick up blocks to bring them back to their dimension. I propose adding biomes from both the Overworld and the Nether to the end as mini biomes. This would be of course explained by endermen moving blocks. These mini biomes would take up only a small area of the larger islands or could just take up whole small islands. They would be rare but would make exploring the End more enjoyable and give the player the ability to survive, at least more comfortably, in the End.