Multiple feature suggestions: Minimap scaling, customized tab panels / datatext panels heights, customized aura bars font size, customized cooldown text XY position, hide panel backdrop & split party & raid frame(s) individually.
Minimap scaling: An option to adjust the height and width individually instead of a scaling system.
Tab panels / Datatext panels: An option to adjust the height of the panels instead of a fixed value.
Aura Bars: An option to adjust the font size as well as the font itself.
Cooldown Text: An option to adjust the XY positions of the text on the icon(s).
Panel Backdrop: An option to hide the panel backdrop frame without hiding the panel itself. Specifically the vertical lines connecting the tab panel(s) to the datatext panel(s).
Party / Raid frames: An option to split and position the frames individually instead of having one "header". Perhaps having a header for each group in raids. A header for each party frame would however be needed.