To further add to the conversation about likes/dislikes, Reddit has a system I personally enjoy, that being the karma system for those who don’t know about it. You gain karma for getting up votes, and lose it only when your post up vote count drops below zero.
This means that up votes or likes would count every time, but down votes only count when they are actually justified i.e. Lots of people dislike your post. It also encourages up voting and posting quality content and through this system, certain rewards can be introduced, such as unlocking badges after a certain amount of karma has been reached. It also allows users to give their opinions on a comment through likes and dislikes, without necessarily being a detriment to the down voted User unless, as I said, everyone down votes. In this way, I could see dislikes being able to be implemented without the danger of it turning confrontational, as it mostly only would count in the case where others also agree.
To build on this, a love button that gives double karma or whatever would be easy to integrate into that system, and would allow users to greater express how they feel towards a topic or comment.
Aside from that, I think a swear filter is pretty standard on most any forum you come across, so I wouldn’t ever be opposed, so long as it can be toggled on and off.
Edit: still gunning for a way to sort comments by newest/most liked(or disliked if it gets implemented)/hottest. Hot comments being those getting lots of likes per time frame if that wasn’t clear.