Hmm. As far as I've seen these ads are just 350x250 and 300x100 blocks. I've never seen the layout or styling of a subreddit modified for an ad. And I imagine many of the communities being very upset if this did happen (Imagine EA branded /r/gaming).
So that second bullet point seems confusing as I've never seen that and the two ads types they are selling don't seem to offer that capability. Has anyone ever seen the sort of ad that slide describes??
edit: I guess they do have that sort of functionality on reddit.tv but that doesn't seem to be what the slide deck is offering to me.