Use Case: Too much noise in a long topic
Some long topics are interesting discussions throughout, and thus there is little noise - a “funny pictures” topic, for instance, is likely to consist mostly of funny pictures in nearly every post. Others are characterized by occasional posts of interest, with a lot of, “wow, thanks, this is awesome!” or “Anything new about this subject?” inbetween.
Here, likes will probably provide the most guidance as to what’s interesting. Jumping to the middle is useless, because you still have to slog through all the noise to find the jewels.
And interesting thought here would be to provide a “like” slider at the top. If I set the slider to 5, then it will tell me how many posts have 5 or more likes, and a button to the right lets me jump to them backwards and forwards. Set the slider higher to have fewer most liked posts to view, and lower to increase the number of most liked posts to view.
Time can also be an indicator, depending on the topic. When someone make a useful post it’s usually followed by a flurry of responses, so there will be definite peaks and troughs in the posts by time graph.