From what I've read, the format of this year's E3 was a disaster. It was incredibly disorganized with major events scattered across Santa Monica instead of in one centralized location. For the news sources that had to keep up with everything. I can imagine just getting to these events being a huge chore.
As for Nintendo using E3 as a platform to showcase WiiFit. I have to say that wasn't a good move. I mean, at this point Nintendo could have showcased WiiFit at any event and gotten press coverage. E3 is a GAMER event (and I have a hard time even calling WiiFit a game), and even though it has been downsized it should remain that way. And let's be honest here, did E3 ever REALLY get that much non-gamer media coverage anyway? Yeah, it was the largest and, thus, more publicized event for a while, but even then there wasn't THAT much media coverage unless something like a new console was unveiled. And so far I haven't seen much more than tiny blurbs on Wiifit--and I've definitely seen more news bits on other things from this E3. Hell, I live in LA, 15 minutes from the Convention Center where E3 used to be, and the only non-gamers news I ever really saw for it was a little 2-minute blurb on the 10 o-clock news explaining why the downtown area seemed to be infested with nerds for a week. Non-gamer media coverage for Wii Fit has been minimal, from what I've noticed. So I can't really say Nintendo's focusing on Wii Fit this E3 was worth it.