Minor Voting System Suggestion

A problem I've noticed on Reddit (and here sometimes) is that a thread will have a good subject and a good amount of replies, but less than half the upvotes/votes than there are replies, even though people are clearly enjoying the discussion. So, I was wondering if we'd be able to implement a feature that automatically votes for a post if you comment on it. Or, instead of forcing it, have a checkbox near the post form specifying whether or not you'd like to vote the post up upon completion of the comment. That might give good discussion posts some visibility instead of just posts that are a shitshow in the comments section

EDIT: I don't know what I'm talking about move along please