OK comments from here are directed at draft two. I will post several here as I read through for the first time.
Ataraxia is freedom from anxiety and emotional disturbance, sometimes called “tranquility”
Should this be: "Ataraxia is a feeling of freedom from anxiety and emotional disturbance, sometimes called "tranqility.""
If you are having a feeling and are not 100% sure that it is pleasurable, it is not pleasure. Pleasure is unmistakable. Even a newborn can feel it.
Would this be true of pain too? Are we introducing an ambiguity by implying that there are feelings which we cannot tell are either pleasure or pain? How would we explain that?
What are Pain and Pleasure?
It is not necessary to mention this but as I finish reading this section I see you are discussing things i think DeWitt classifies under the "unity of pleasure" -- that pleasure is all of a similar type (as I gather pain is too)