Good Idea Rated 5 out of 5 stars
I like it.
I typically use keyboard shortcuts to reveal sidebars (click View > Sidebar click etc isn't as fast) but this is much better.
I'm curious as to how well I can customize it to get it to blend in with other themes.
You should consider making it compatible with current releases and perhaps just use icons and tooltips?
Also you have a cool blog. You should provide a link to it.