I am an android player, and I have always been frustrated with how hard it is to move things around my island.

However, I just downloaded the new Castle Story for Android, and it has an edit mode. It's fantastic! You can see where all available space is, it shows your cleared land on a grid, you can see how many "squares" a building needs to occupy, and you can go into an "edit" mode to move/rearrange many items all at once.

I would LOVE to see Dragon Story (Android at least, I don't know what the Ios version looks like) implement something similar.