Hello Blockheads. I've recently created a fortified island within Minecraft. I've created everything I can think of that is useful and would like your input as to what I could add to make the quality of the map better. I plan to make this island self sustaining with wood, food and water.

Red- House(unfinished)
Lime Green- Center Fountain
Cyan-Trees
White- Nether Portal
Orange-Surrounding wall 4 high and two wide
Blue-Boat Dock
Yellow-Wheat Farm
The island is around a thousand blocks away from mainland.
Thanks, constructive criticism welcome.