This is a very clever and unexpected use of Timeline, but of course the Timeline View really does expect to use dates, not Likert scale means.
My first thought was that I could try to figure out how to use x and y coordinate attributes to place each note in a horizontal line in the Map view. But that approach wouldn’t include a ruler/scale on the screen which should be a key component of the visual.
I think this would be my preference, too. I think that making a ruler or scale in map view would actually be easier to manage.
Let’s suppose, for the sake of argument, that we have Likert scales that runs from 0 to 4. We’ll put the left edge of the scale at X=0 and the right edge at X=20. We could start with an adornment 20 units wide, with its left edge at X=0, and use the adornment grid feature to show where the Likert scale units fall. Then, arrange each note according to its mean score ($Xpos=$MeanScore5) and its $QuestionNumber ($Ypos=$QuestionNumber3).
Another approach would be to place notes or adornments at suitable places on the map — perhaps transparent adornments would serve.