Right now, when you go to the mail queue, you will see potentially hundreds of entries listed for one single blog. That makes it very hard to get a snapshot of what has been sent on a blog-by-blog basis. So what would be more helpful to me is having the mail queue list out the emails overall with an overall sent/pending listing. Then there would be a link to a list of recipients for each, where I could then see all the recipients for that email.