I am working at a comic strip booklet and I wish I select dialogue balloons using a custom shape.
My dialogue balloons are hundreds and linked using the link tool.
I need to select each one and apply a custom shape unto it then further customized it if necessary
I am not satisfied with default custom shapes so I wish I could add a new category along Default Shapes, Arrow, Jigsaw (Properties -> Shape)

Here is a sample

Is it possible? This could be of great help.