Most of your complaints can be basically traced back to one simple point:Its a teaser trailer.Its not meant to be a full reveal or what not.Its just to get the name out there and get people aware of it.Now, wether Nintendo should release snipets of information through the holidays to then finally instead have the reveal in January instead of just holding all back is debetable, but saying that Nintendo is doing the same mistakes is plain wrong.And for all we know, this mystery around the Switch has been working so far, people have been talking nonstop about it, either in a positive light or negative, such as your post.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1
