Well, no. The new AppleTV doesn't do what I am doing with the MacMini, perfectly or otherwise. There are several key things that the MacMini does that the AppleTV doesn't do. These include being able to watch DVDs, being able to watch and record TV, as well as being able to act as a full media center, with complete Internet access. Currently, most of our TV/movie watching comes from Netflix, and while their instant view service is great, it is a small fraction of the movies that are out there. So, most of our Netflix use is still in the form of DVDs through the mail. Plus, we have an EyeTV to allow us to watch and record TV shows on e rare occasion that there is actually something on TV that we want to watch.
So, while I appreciate the capabilities of the new AppleTV, suggesting that it does "perfectly" what I'm doing with the MacMini is a little presumptuous on your part...