The best data visualizations perfectly marry the form and function.
A form is the aesthetic looking feel of something.
Function focuses on whether or not the design os effective at accomplishing the goals or tasks associated with it.
Is the visualization too complicated to understand quickly?
Is it so simple that it looks like it was designed in Excel?
The perfect middle ground is visual that is appealing to the eyes while being very simple to digest.
Be very careful trying to dress up design.
Overcomplicating a chart or graph by either adding other types of data visualization to the mix
or finding an untraditional method to deliver information will only make it harder to comprehend.
You should not have to make something so creative that it becomes almost impossible to understand or even worth – changes it’s meaning entirely.