The ability to select tiles from all layers. Ctrl+left mouse? For example, I have a house, the base is on layer 1, the roof/windows is on layer 2, and random things like chimney or some such is on layer 3. Currently in order to move the whole house I have to select the tiles on each level and move them separately. Instead, you should be able to hold ctrl+left mouse while selecting which will select the tiles from ALL layers, and allow you to move the selection like normal.
The ability to select tiles from all layers. Ctrl+left mouse? For example, I have a house, the base is on layer 1, the roof/windows is on layer 2, and random things like chimney or some such is on layer 3. Currently in order to move the whole house I have to select the tiles on each level and move them separately. Instead, you should be able to hold ctrl+left mouse while selecting which will select the tiles from ALL layers, and allow you to move the selection like normal.