This project will soon have an iron farm, gold/ghast tear farm, egg farm, cactus farm, melon/pumpkin farm, zombie/creeper/spider farm, slime farm, witch farm. I might even make a custom texture pack for it. Currently I am working on the iron farm.
This will be a perfect base for any survival server or survival map (sorry, I don't have enough done yet for a download link).
If you decide to make a YouTube video on it, make sure to give credit to me in the video description as well as a link.
I am open to any suggestions you have.

Additional Notes

Credit goes toalexw9988for the mob sorter design, not me.