Slade,

I too am looking to upgrade my 6000 and 7000 to TouchSquid remote solution. If you make any progress or would like to discuss in more detail, I'd be happy with you.

My current setup is:
7000
Downstairs Living Room:
BD player
TV
DirecTV cable box
DishNet cable box
AV reciever
scaler
HDMI matrix switcher

Theater Room:
Projector
Scaler
BD player
AV reciever

Upstairs:
6000
TV
AV Receiver
Roku
DVD player
Dishnet Cable box
Logitech Squeezebox

I have 2 Android tablets and would like to replace each remote with a tablet. I know that I will need secondary pieces like a iTach on each floor and/or room to translate the codes to IR, so there is that additional cost, plus the time involved in customizing the tablets.

From reading your post, that's not really answering your question. I don't know that you can reuse the RFX units, you would have to find a remote that outputs RF at specifically the frequency of the RFX unit. This is another reason I hadn't changed, I also have an RFX unit. With the WiFi-IR iTach unit, you use your existing WiFi network instead of RF and have the ITach units do the translation instead of the RFX units.

Hope this helps.