Thanks for your feedback and suggestion, I am glad you can use the plugin!
I have had the same thought, however, I am not a big fan of forcing content to the post screen of other post types, among other things because this could mess with a certain setup that another plugin author had made for his post type.
I am not refusing that it will be implemented somehow some day though, it's just not a priority right now.
If you want to show a sidebar with a certain group of posts before they're even made, you could make it appear with e.g. all posts or just the ones that contain a specific category or specific term.
For hierarchical post types (e.g. pages) I've thought of an option for whether or not all children of a selected object should be included automaticly.