I don't know if anyone wasted their time on Nintendo's separate 3DS conference, but 2 good things came of it.
A proper explanation of the gameplay for Castlevania: Mirror of Fate was shown... and frankly I'm a lot more positive about it now, I actually want to buy it now (Alucard is playable in addition to Trevor and Simon... not sure who the fourth character is yet).
Also, a gameplay explanation for Paper Mario Sticker Star was also shown, and it looks quite fun as well.
Otherwise, a complete waste of time.
*HUGE EDIT*
And, as I say this, look what Nintendo strangely did... They announced something for 3DS, but on Twitter instead of their 3DS conference!
https://twitter.com/NintendoAmerica/status/210570017471864833Fire Emblem!
What sense does THAT make?