We had some very early ideas of other "Likes" abilities, similar to what Facebook has, but it would take a while to implement.
In what way do you mean a user was "sanctioned"?
We do encourage discussion and don't want to completely remove that. Especially when disagreement posts (should) lay out their reasons. It is on members to keep a cool head and fair assessment of others, for better or worse. We'd also have the concern of Grumpy Guses deciding to downvote everything when they get upset.