Ward Placement - Vision Radius

So one idea I've been kicking around is the addition of a vision radius while placing wards.  

What I mean by this is that if you normal cast a ward, not only can you see the radius where you can place the ward, but you can also see the area which the ward will give you vision of.

Right now casting a ward is like this:

I want it to be something more like this,

insofar as I want there to be a second radius that you can see when casting the ward.

This change won't make warding any harder.  Smartcasting wards will be the same.  The only difference is that if you Want to place a ward with precision focused on vision, you can.