Well, I missed all the E3 festivities entirely. I've watched a couple summary videos and looked at a couple articles. Nothing that I saw impressed me at all. I saw a hilarious video of the new Tomb Raider. It had the Uncharted theme playing over it, and I thought it was Uncharted 4 for a minute. Then I realized it wasn't.
Almost everything else seemed to follow a formula of; Cover mechanic, stealth mechanic, and most importantly of all - *camera zooms in, possibly a tad of slow motion - the close-up brutal execution of an enemy mechanic. I didn't think I'd ever get tired of violence, but it's starting to all seem the same. I like my sickening violence to be sickening, not 'par for the course'.
I don't want to get hate mail for this, but the one basic thing I was looking for in Nintendo was to show that the Wii U is powerful. What I saw were 360/PS3 level visuals. Now, maybe I'd expect that from ports of PS3/360 games, but the story didn't seem to change when I saw other Wii U stuff.
It appears that what we have in the Wii U is, once again, current (soon-to-be-last) generation hardware with some innovative features built around it. Innovation is always good. Premiering a brand new console in 2012 with 2005-level hardware is somewhat not good to a "core gamer". Many will see little to no point in trading in their 360s or PS3s for Nintendo's new machine, I feel.
Hopefully it's just a rocky start, and maybe the hardware is mind-bendingly complex and devs are just having a rough time with it? Seems unlikely given Nintendo's penchant for simple hardware since the GC.
In short, I saw nothing from Nintendo or anyone else that particularly interested me.