I really like your plugin but there is a similar one that goes a step further: http://wordpress.org/extend/plugins/hierarchy/
the feature that one has and that your plugin is missing is the following:
if I hover over the page where the blog posts are displayed, I get the option to add a new post while your plugin only offers to add a new page.
Please have a look at the other plugin that feature is so great, it also works for adding new categories, custom post types, etc.
Unfortunately it has a few drawbacks, so I prefer your plugin.