I play on an iPhone 6, which isn’t exactly a small screen. When I am trying to cycle through banners for a team, I have a very hard time keeping my finger/thumb on the button for consecutive clicks. I feel like increasing the size of the buttons would help me more consistently hit the button, and there’s plenty of real estate in the “Bonuses” tab to make them bigger. A 50% increase along each dimension would help a lot, and doesn’t risk overlapping with any other UI elements from what I can tell.