Or should I just give up on it and get 2 receivers and 2 bluray players and put them all in the rack together, one set for each room....
That looks like the Solution to me.
You want a lot more flexibility than today's standalone single A/V Receiver is going to give to you.
Then you are trying to fix it with $300.00 plus switchers, exotic wiring, etc..
In fact, two fully independent setups was and is the Solution that I used, it just seemed to me, to be a "No Brainer"!
Room 1: Pioneer VSX 1021, HTPC (with Blu-Ray player-Streaming Content) and Time Warner Cable DVR.
Room 2: Pioneer Elite VSX 53, HTPC (with Internal Writer / Player Blu-Ray-Streaming Content) and Time Warner Cable DVR,
For the price of the SC 55 and definitely the price of the SC57 you could easily buy two Pioneer VSX 1121's,
or two Elite VSX 52's or combination of your choosing, you can find very decent Blu-Ray players in the $100.00 range.
Hook up your two Cable boxes, one to each location and you have all of the flexibility of Cable, Blu-Ray, HDMI Full Audio that you want!
Then run your Zone 2 etc. from whichever location works out to be the easier choice.
Sometimes the "One Solution" / "All in one Box" Scenario is just not the best one! Not in 2011..Not Yet.
Independently though you are FREE to Look at each location as it's own and what you want and expect from that location, FREE to put it together exactly the way that you want!
No Switchers, No fancy mess, No Stress, just easy and straight forward!
No matter where you sit down with your Popcorn, Beer, Coffee or whatever, you will be good to go!
Now don't you feel like a weight was just lifted off of your Home Theater Shoulders? LOL!
A lot more fun to, because you really can set them up, exactly as you want!
Go forth and when it comes to "Home Theater" Multiply Independently! LOL! I crack myself up!
Have fun with whatever solution that you choose, there are options though, that is what I am trying to say.