This has been on my mind for some time now, I really think it's a good idea, the "like and dislike" won't really count for anything its just a kind of check as to how reasonable people find your opinions.
The forum is unique in a special way and that was the first thing I observed about it when I first had first hand contact with it and compared it with other social platforms online.
A like and dislike feature does not keep the forum conservative as it should be and should not be entertained as a welcome idea when the meriting system is already doing that.
When users quote your post/comment, the way the message they give as a reply is enough for an opinion to be taken whether reasonable or not, the words would say it.
Moreover, even on Facebook people still give likes to useless and nonsense posts. How reasonable is that?