Simplest feature request of all, and you already have all of the code you need to make this happen with very little effort. I’m talking about signs!
Signs should come in three varieties: Wall sign (1 plank scrap), Sign Post (1 plank scrap + 1 stick) and Pointed Sign Post (1 plank scrap + 1 stick).
Function: Wall sign hangs on the wall. Sign Posts are planted in the ground just like Wooden Hooks (and can be rotated). Use the label gun to label them. Now you can name your Islands, leave markers with notes and point the way towards things!