One would like to think so, however apple has it's own reasonings for doing the things that it does. Let's both cross our fingers as I think Safari would be a great experience on the Apple TV.
I think Safari would be a great addition to the Apple TV, especially now with the new keyboard future. We have already seen doing Microsoft a similar thing with Internet Explorer on Xbox 360 and Xbox One. Let's hope so.
I agree that this would be a fantastic addition. Hopefully Apple considers it. In the interim, check out Air Browser. It actually works quite well. You do need to have an iPhone or iPad I believe to run it though and have it AirPlay to your TV.