Add visual Coordinate System editor

One of the main advantages of fme desktop is that you don't have to write any code to perform the most complex tasks. This is a visual editor.

But when it comes to adding custom crs you have to deal with this:

Sometimes it makes you feel like crying

It would be great to have a graphical coordinate system editor and the ability to import/export coordinate system in various notations like proj, wkt and so on.