Scatter Chart - Auto Position the X and Y Constant Lines

What we'd like is to have a scatter chart feature that will automatically position the X and Y constant lines in the middle of their maximum values.

Currently, you need to manually specify the constant line values for the X and Y axes.

In our case we are creating a quadrant scatter chart and want the X and Y constant lines to evenly divide the quadrants (i.e. the lines to be half the maximum values for X and Y).

The problem is that we are playing with different scenarios where the maximum X and Y values will change. That means we have to manually update the X and Y constant line values which is a pain.