Often times just looking at just the average or min/max of the data might be misleading and understanding the distribution of the data is as important as the aggregated value itself. The Percentile Chart is useful for such scenarios as it helps to see the shape of the distribution, such as how big the tail is at either end, along with the value.

My proposal is to integrate a percentile chart similar to what you find here : https://powerbi.microsoft.com/de-de/blog/visual-awesomeness-unlocked-percentile-chart/
https://en.wikipedia.org/wiki/Cumulative_distribution_function

Thanks for the great work, I realy like mongo charts, keep going!