The draft.blogger.com is seems like the beta version of new features of blogger.com. And we can try the "to be added" gadgets and features of blogger on "draft". And I think it is a good thing for both of us.
You can visit their blog on bloggerindraft.blogspot.com and try the future features of blogger. I have tried some of them and they are really good.
- Blog List - a blogroll to your blog's sidebar
- Scheduled Post Publishing - schedule the post to appear on your blog
- Feed Subscription
- Help your readers subscribe
- Search Box - Search over your blog and more
The last feature in here the Search box is the best thing I have experienced among the others. It is a AJAX control and works really good and I hope you all (the bloggers) will love to try them up.