I'll look at everything I can get my hands on. I don't like going into a game uninformed. While TotK has one cool looking trailer, Nintendo's apprehension with the plot and unwillingness to release details about the game (heck, treating the title as a spoiler) give me a bad feeling.
I'll watch all of it. While trailers are good at indicating a game's existence, by the second go around they're largely just a flashy way of presenting the game's logo. I'd rather stay informed while spending my money. Breath of the Wild was good, but nothing about it makes me want to buy a game...