I was with a friend, so I had no time to write my reactions here, but I'll try to sum it up right now.
I'm overall quite disappointed by Nintendo's E3...
I have absolutely no interest in Banjo or Dragon Quest so the Smash announcement were quite disappointing for me, but Smash aside, the overall conference was a bit sad for me.
A lot of portings and remakes, announcements of already announced stuff, and little to no new stuff. The small 10 seconds of hype came when they announced the dungeon maker mode in Link's Awakening, and that's all. Breath of the Wild sequel... cool, if not that I didn't like the first one at all; and they even wasted some time talking about Pokèmon when we had a Pokèmon conference right some days ago.
I dunno... they said that there are more games that will be announced soon, so maybe they will announce something that interests me in September... this direct just failed to hype me, it left me with delusion instead.
If anything, the menu mechanics of the Hero from DQ seems interesting gameplay-wise... but really, any RPG character could have had that, even Cloud... Why not using a similar gimmick for Young Link and the masks? Or the ocarina songs? meh... I'm still not fully convinced if to buy Smash or not when I will get a Switch, I'm just not interested enough, I doubt the last 2 newcomer will convince me unless they are Adeleine and Karate Joe, or so (I know they will most likely be 3rd party character I care absolutely nothing of, just like the other 3).
Sorry for the rant.