I don't get why that would be a thing when she was in fact smiling in the first trailer. Or why that would have any bearing on either the quality of the trailer or that of the eventual movie. How many times did Josh Brolin smile in the Deadpool 2 trailer and why would anyone care?
Because she's a girl?
I've been from one side of the internet to the other. I've seen a lot of strange things, but nothing as strange as fandom. I was sold on the movie as soon as she was announced as the lead, smiles or no smiles.
Anyway, the movie looks like it'll be fun to watch. I loved the seen with the cat. Nick Fury brought to his knees by a kitty cat.lol
There are some ninnyhammers on the internet that want to say things like, "You'd be prettier if you smiled more," and the like, to women. As if being prettier for them was in fact the woman's goal and she needed advice from men about it.