OK my first comment would be that by placing 'CONCEPTION" as one of the three labels on the legs at the far left, you are taking sides (which you may or may not want to do) with Anticipations / Preconceptions BEING THE SAME AS conceptions. DeWitt advocates against that and I think for good reason. Yes that is a very possible reading of Diogenes Laertius, and Bailey uses that word, but most other translators do not. Against that view is Velleius, and to take that position from the beginning would skirt the very deep issues that I think DeWitt does a good job of describing. DeWitt's formula is that "conceptions" are the "output" of the thinking process, while the better labelings of the "inputs" are 1 - anticipations (or preconceptions or prolepsis) / 2 -feelings / 3 - 5 senses,
And the real issue is being clear to illustrate the location in the chart where "error" arises, which most people seem to agree to be in the opinion-making process (which seems to me to be more the "conceptualization" process). Until that point the three legs of the canon at the very left are presumably operating irrationally and mechanically and wherein 'all sensations are true". I personally think that the three legs of the Canon MUST be considered to operate "automatically" in that sense (of not having any component of opinion) in order for them to function as standards of "truth" or "measurement." To me, the "all sensations are true" formula makes the most sense by seeing all of the inputs from all of the 3 legs as "sensations" rather than just using that word to describe the 5 bodily senses. It makes sense to me to refer to the data from pain and pleasure as "senses" (I sense pleasure and pain) and for the sake of being parallel I would see "an anticipation" as data received from the faculty of anticipations just as would see light or sound as data received from the faculty of the 5 senses.
That leaves concept-formation and concept-application much further to the right on the chart, almost near the end, which is where error can and does occur and where you have to do the "waiting" and the "analogizing" and the application of the PDs in the mid-20s.
And given the way you are drawing the chart, you may want to have "images" in there somewhere too, or at least annotate it as to whether you see images to be part of anticipations, feelings, or sensations. This is where DeWitt hypothesizes that they were seeing the brain as a "suprasensory organism" - because you don't see "images" with your eyes.