Provide Limits to Ranges of Line Style Cursors

I am placing a cursor on a graph that is part of a set of graphs in the window. The graph trace (a histogram) occupies the lower 30% of the window and another graph (the source image) occupies the upper 70% of the window. The vertical hair mode creates a line that extends over the entire window.

I have to wonder whether an option could be added to limit the cursor hair range. As with the extension on the /T flag, perhaps have an extended feature like this ...

Cursor/H={1,(left, bottom)} A traceName x_value
Cursor/H={2,(left,)} A traceName x_value
Cursor/H={3,(,bottom)} A traceName x_value

This would limit the extent of the line style cursors to only the range occupied by the named axis.