Thousand separator for Count, AVG etc

While using Modeling, i can format numbers (coming from columns or measures) in reports, i have not found how to format the resulat of a Count(X) , specifically when X is a Text coulumn.

Displays of these results are not very nice in both Reports and Tooltips.

(i have not added an extra column with the Value 1 and Counted on it which sounds tricky)

Thanks for feedback...