Textline in serial plotter

The serial plotter is one of the coolest features to me. Really useful.
But I'd love to see an additional text line instead of the color-legend. Just like one line in the serial monitor.
In the best of all worlds the entries would be colored like the corresponding curves.
This would be way more useful to me as I could do debuggings like this:

velMin: 0.24 velMax: 10.00 velNext: 5.34 ...
and the colors would correspond to the curves in the Serial Plotter. They might as well appear as underlinings or background colors.

By the way: An additional Button to start the Serial Plotter inside the main window would be helpful as well.