The idea of existing the button itself. Thats the uggly thing, atleast for me.
The same as the "Game mode" button. main gui have an entire horizontal frame just for 2 buttons, game mode and upgrade. When we hyde the upgrade button we end with an entire frame with just one item, the game mode. Thas ugly. Astheticaly speaking its ugly and has no porpose.
Remove game mode button and add some kind of game mode indicator inside the green big box. when clicking there the box becomes blue and activate game mode. when the user mark to hyd upgrade button then the entire frame used for these 2 buttons will be removed from the main gui.
Remove the lucky freaking button and add some kind of indicator next to the valkyrie logo... see attached picture..
