Is this possible with new blog templates ?

Hello,

New blog template is displaying themes after we register in the site as a second step in the signup process.

But, is there anyway to display themes as first step and after ee select theme, we will register an account and a blog and proceed ?

Like a special page to showcase all the themes we are offering via new blog templates and when users seledt their choice, they will go to signup page and create their blog.

Similar to this :

http://theme.wordpress.com/

Thanks and let me know.