Design proposal: The navigation bar's circle is too small
Current navigation bar:
My proposal:
I think the middle circle of Android's navigation bar is too small. It may have the same height and width as the back arrow and the recent app square. But it appears smaller because it doesn't fill its space as much as the other icons do.
Here's an article describing this optical illusion: https://medium.muz.li/optical-effects-9fca82b4cd9a
Current navigation bar:
My design proposal: