Feature to add multiple customized tooltips for Matrix table

Currently any tooltip(tooltip page or through adding fields in tooltip pane) gets applied to all the cells across the matrix table. There should be an option to add multiple customized tooltips for a row wise or column wise calculations. Usually to show several measures in a summarized view in a matrix table, this customized multiple tooltips feature would be of great benefit. This is not only for Matrix table Visuals but also can be applied for other Visuals as well.