As much as I want to believe in these kinds of live sports services, I'm always disappointing in the quality and/or reliability of the feed. Maybe it's my ISP, I don't know. But for me streaming seems to be a second class citizen compared to cable & satellite.
As for the merger, I hate it because I actually think DirecTV is a pretty good product - even though the price is a bit high. I don't think a merger will do anything but reduce the quality of service, increase the price or both!