The pull-down is a progressive reveal: when it’s half-way out, you see the top half, which is probably where the stuff you care about is.
The pull-down slides the view into place: when it’s half-way out, you see the bottom half, which will be blank if you only have a couple of notifications. Also, there’s no indication that you have any notifications unless you pull the slide out.
Pretty trivial, to be honest. And both entirely fixable before the actual release of the thing.