Honestly, this is probably one the better E3s that I can remember. I can't remember the last time there was a legitimately "good E3," though. The one where Shigeru Miyamoto went on stage with the Zelda sword, whenever that was, probably.
I skipped Microsoft's conference though, I heard it was absolutely awful, so I don't have that dragging my opinion down. Definitely too much pandering to the casuals overall, but that's how you get money these days. It's either pander to the casuals or lose them to smartphones.
I'd have to say that there's been some really neat stuff so far, Beyond - Two Souls, Assassin's Creed 3, Arkham City Armored Edition and a few others.