Design fail

This is the very best subway app for Korea. It is super useful with multiple languages and clean interface. A big plus is the ability for the app to download the whole subway map. This is especially useful for tourists who dont have a wireless connection outside.
7.0 update: UI design is a fail. Why are there 4 huge buttons hogging up all 4 corners of the screen? There should be just one button that brings up the sub menus. Please go back to the original design.

alex91008 about Subway Korea, v7.0