Great plugin and what the community does with it looks exciting!
I was looking for something which, after an hour of searching and playing with your plugin, I learned is called 'blur fill'.
You plugin does something similar. From the posts, I can see how the alpha fade is useful in cases the result will be placed on top of another layer.
In cases like mine, with single images, I think it would be great to be have the option to blur fade. Maybe with checkboxes allowing to even select both fade blur & alpha.