A shortcut key would really improve the break at points Shape Tool function.

So if we say p is the shortcut key, I would click to place a point on the line I am editing then pressing p will automatically break the line at that point.

It is very disruptive to have to click on the line then go all the way to the Shape Tool infobar to hit Break at Points, then return, add a new point then return to the Infobar.