Direction of travel indicators / forecast
I'm an X blue water sailor and accustomed to looking at NOAA Surface Analysis Radiofax Charts such as those that can be found here. https://www.weather.gov/marine/hawaii#nsfc
I have always found their forecast track arrows to be particularly helpful in quickly visualizing developing weather in one's area of interest.
While the same information can be gained by playing/advancing your timeline, I, for one, would welcome an option to display forecast track arrows and believe it would be relatively easy for you to extract/implement from from your existing data structure.