An undead dimension, you create the portal by making an end portal shape using bone blocks, and filling it in with obsidian. The obsidian will disappear and be replaced with the same blocks filling in end portals. In the dimension, there would be zombies, skeletons, bone horses, and mycelium instead of grass, and stone. Next to no ores, only stone and pockets of bones. A new boss called the Undead Unicorn. Its the size of a normal horse, but it attacks with it's horn for about 3 hearts. It drops bones, and a potion ingredient called the unicorn horn. Its used with a healing potion in a brewing stand to make a splash potion of love. When you splash it on a mob, it will become your pet (only on non-boss, not undead, and not wolves or ocelots). If you use it on ghasts, their tears disappear and they smile. They grow stronger because they are now happy.
If this could be added on XBOX 360 because of the aquatic update not being released, that would be great! It can also be for PC, but I just want to make it up to the XBOX users with another big update.