1.free select for colors by color codes.
I can understand Metabase provides us nine hand-picked colors.But in some cases we need more colors besides them by writing color codes.
2.stacked-bars combine with line chart.
Now we can only choose ‘stacked’ when chart is in bar style.But there isn’t ‘stacked’ option when chart is in combination style and some series are still in bar shape.
Sometimes we need charts combine stack-bars with lines.Also which columns should be stacked and which shouldn’t can be selected by user is another good point.
Hope for these features can be in the ‘next version to-do list’.