I'd like to make a bivariate legend that looks like the below.

You can currently only change the label sides and cannot define the breaks. It would be helpful to be able to set the breaks in the Histogram and use those breaks as labels. Also, allowing the ability to label the X and Y axes. Currently the only legend option for Bivariate allows the changing of the corner labels as seen below "Low" and "High". Bivariate mapping is really useful but is quite limited by its legend capabilities but should have these functionalities integrated into the Legend Options and not rely on Photoshop to achieve the above desired final product.
