For me the Direct was good but not great.
Pros:
Mario Kart was the biggest pleasant surprise. It's got the hang-gliders, the bikes, driving up walls and upside down, beautiful visuals... couldn't have been better, IMHO.
X, W101, Wind Waker and Bayonetta all looked great.
DKCR and Smash looked fantastic (Mega Man!).
Cons:
Zero surprises aside from Mega Man in Smash and DKC, which leads me to...
... this is all we get from Retro!? I hope the rumors of them being busy building engines for WiiU pays off soon.
SM3DW looks like a lot of fun, but the presentation is quite disappointing to me. It reminds me exactly of how the NSMB DS to Wii compared. Looks almost exactly like the 3DS game assets - like Nintendo played it safe (and lazy) with the presentation. Come on, guys. After 3D Marios like 64 and the Galaxies you can't expect us to settle for this on WiiU. Still, the game does look like it'll be very entertaining, which is what matters of course.