Simplifying an elevator panel (but not much)

Besides digital and/or online interfaces, UX can also help us to identify and fix bad experiences with more analogue interfaces, such as elevator panels.

Basically, a good design should make the user have the least doubts and think as little as possible about what procedure they should use to achieve the result they want, except where doubts are intentionally created and make sense in the context of design. For the most part, if in doubt, the design is probably not clear enough.

Look at this elevator buttons:

 

Now, imagine the situation: someone might have stopped and thought that in this arrangement, the aesthetics of the button frame would look better. This person might be thinking: "But and now? Does the arrow correspond to the button that is aligned vertically or horizontally? How do you know?" You can even push the two buttons to ensure that the elevator you want will arrive; it's not as if you would get stuck in the building for that. However...