you need to be able to show the data value vs hovering over it to show the data values. you can show the data labels in the bar graphs but it does not apply for the geographical maps.
Yes, it would be great to select the field or measure to show on the map. I would argue that that was the original intent of this "completed" idea: https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/8148939-data-labels-for-maps And this is similar to this posting: https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/31988233-map-data-labels
