What should have? Well, normally, I use some interactive graphics where the user can select the criteria (year, month, etc). The graphics can have some “movement” when the criteria are changed. Should not have many colors to distract the attention of the user or even confuse.
We can use hyperlinks to some documents, presentations or even to go to the detail information. Understanding our data goes further than just presenting them. We need to know what is behind and as we get it.
The message on our dashboard should be clear and simple to help us make decisions for our business.