If this was just DirecTV they would have released a new client by now, but since AT&T bought them out Its really hard to think they would invest in new and improved hardware.
They could technically try to use the same technology that UVerse wireless receivers used, I heard the UVerse clients worked really well, especially the wireless ones.
The way my condo is designed the main receiver is upstairs and the wireless client is downstairs, it would be very ugly if they ran wires to the living room.
Either way both clients need huge improvements, sometimes because of the lag I type too many digits when changing channels.
This is really unacceptable.
Also fast forwarding or rewinding is dreadful because the slow response when you input a command through your remote.