DirecTV Whole Home and HD DVR HR24-100

I recently had the new DirecTV Whole Home system installed in my house including an HD DVR and two, remote HD receivers.  Below is a list of my experience, pros, and cons.

PRO:

• In the multi-room configuration I am able to watch TV on both receivers while the DVR is taping up to two programs.  This would indicate that I can see up to 4 channels simultaneously.
• One, single DVR.  I think this is great.  In my previous configuration I had two DVRs (one in the living room and one in the bedroom) which would sometimes lead to taping the same program twice, once on each, or having to watch the content specifically in the room you selected.
• Remote programming.  On both the directv mobile site and on their mobile application you can search for programming and schedule it to your DVR (you can also select which DVR if you have multiple).  I've found this really helpful when you're away from home and hear a commercial for something you want to watch.  (Here is a picture of the mobile web site on my Android phone).  There is also an iphone/ipod ap on app store.
• DirecTV customer service is pretty great.  I've only had to call them a few times but they are always knowledgeable and professional.

CON:

• DVR has two tuners.  as such you are limited to only taping up to TWO programs at a time.  (See image)
• Whole Home conflicts with On Demand/Internet content.  On my previous HD Receiver (HR21-100), I had it plugged into my home network (With an Apple Airport Express, acting as a wireless extender) and I was able to watch/download DirecTV's on-demand content.  This includes current premium programming (such as True Blood and Nurse Jackie).  With the new Whole Home system, the other remote receivers are NOT able to locate the DVR when it is connected to the Internet/ethernet.  I would assume that there is some sort of network/IP problem.  This is partially mentioned on the DirecTV web site, but I see this as a serious technical limitation.  What's the point of having two cool features if you can't use them both at the same time?
• USB Ports.  Well I just tried connecting a USB hard drive to both the front and back ports on the DVR and it doesn't do anything.  I was hoping that I could use USB to upgrade the drive, but looking around apparently you can only do this with the eSATA on the back.
• You can only watch the DVR on two devices/TVs at the same time.  I don't see this as a big limitation as I probably won't be using 3 TVs at the same time, and if you were you could still access live programming on the 3rd TV.  This is the message you see when you try to play DVR content on a 3rd device:  

General information:
 The HD-DVR (HR24-100) has one HDMI, one component, one RCA, a USB and SATA port (on the back) and one USB port on the front.  I understand that you can connect an external drive for storage but have not tried that yet.  From what I've read, the attached storage disables the internal 500 Gig drive, so you don't get "additional" storage space, which seems pretty lame.

** Update.  Using a DECA adapter I was able to connect my internet router to my coax network and the HDDVR is able to use that signal to access the internet.  The DVR has a built in DECA and this frequency acts to bridge the ethernet signal onto the coax cable/network.  I had to purchase this adapter, a SEPARATE (why?) power supply, and also there is a reference to a band filter which I haven't needed yet.