that is a use case I didn't think about! Yeah, my plan is to have 3 apple TVs (one for each kid, and one for parents), two strato players, and possibly spectrum cable TV distributed. When I was looking at overall system price, it probably wasn't that cost effective if I was just going to have Apple TVs only to use the Savant distributed video, but when I got the Kscape demo and fell in love with their user interface and movie quality, it started to make sense to switch back to distributed video because I don't want to have to buy movies on both platforms, although I will probably end up doing that with my kids...hahah.I think you'll find that you like this, because it allows you to have the same source playing simultaneously in multiple rooms. Certainly, when it's time for me to do house cleaning, I put something up on YouTube and send it to all my TVs so I can enjoy listening to it as I move from room to room. That wasn't possible when I had dedicated Apple TVs in each room.
With that said, I live alone, so I don't have a use case that calls for different content in different rooms. If you foresee a time when you may have one family member in one room watching something, and another watching something different in another room, then you can just have multiple source devices in the rack. I think one common approach is to have one for each family member, and then they can select "their" Apple TV or Kaleidescape player or whatnot and be assured that they won't conflict with anybody else.