This is a very nice feature! But its also helpful inside midi editor
for some customizing of midi notes automation.
For example: Modulation automation, and Velocity automation
I attached a screenshot of like Cubase which has these handy "boxes" that can either scale up or down the end of the automation, or the start of it. So you can create fade in or fade out etc etc
This would be nice feature! Hope you can extend the midi editor automation customization!