Dear elextr,
Why did you not make a pull request with your suggested changes?
Because I did not get any answer if the suggestion I made is OK. I do not like to spent time and implement something if there is no commitment that there is a real chance that it may be accepted.
But certainly it does not appear to have much support, although its often the case that people need to see touch and smell the change before they can consider it.
I think I made a proper suggestion including a screenshot from a click-dummy to show how it looks like and how it will work. If you still think it is a good idea, I can continue with that. But currently I spend my time in development of a plugin.