Rolling average graph of current rolling average?
The rolling average tracker type is very good for certain habits that you don't care that you hit every single time and need an unbroken streak, but more as an indication of how well you're doing in the past 30 days, i.e. rolling average. However, I'd find it very very useful to also be able to see how the rolling average is developing for time. That is, a line chart with each point being that day's rolling average, instead of a bar chart with each logged value?
Moving averages charts could also be a combined line chart showing a bar chart with individual days as well as average line chart. If that's too complicated, perhaps just two tabs showing either graph. But I consider the current rolling average as the key metric, so that should be default if any, and if not combined, IMO.