2.8 Default Keymap

In other applications you can still click through and select components, either one by one or with drag select. They also allow you to resize the widget, generally with the + and - keys.

As for Blender, the image you showed you can just toggle the widget on or off, drag select, paint select, or zoom in if the said widget wont select you single select, though I have never had that problem personally. Additionally, I have installed: [Input] Custom Blender Setup | Silo/Maya- esque
Which shows that even with a widget in the way, holding down shift + clicking selects through the widget for the component. Its all possible as Blender stands now.

I doubt it will be a problem with 2.8, such as that the widgets will not be a problem.