QMainWindow, make it easier to dock widgets on the left or right side to another docked widget

It would be nice if there was an easier way to dock a widget on the left or right side of another docked widget already occupying the desired area.

For example when there is a dockwidget occupying the right dock area of the main window, and a floating dockwidget is dragged to over the center, the left or the right area of the docked widget it will result being placed in a tab. If for example the dockwidget is hovering over the left most part of the dock widget it would be nice if it was placed on the left side and not in a tab.

A suggestion would be to only place a dock widget in a tab if it was hovering the center of the already docked widget. The left and right most positions would result in the placing the dock widgets side by side.

Currently it is possible to dock a widget over and under, by hovering it over the top most or the bottom most part of the already docked widget. It would be nice if this also was true for hovering it over the left and right edges of the already docked widget.